<PAGE>

                                                                   EXHIBIT 10.34

                                      LEASE

                                 by and between

                                DUKE REALTY OHIO,
                         AN INDIANA GENERAL PARTNERSHIP

                                       and

                               POCKETSCRIPT, INC.,
                               AN OHIO CORPORATION

<PAGE>

                               OFFICE LEASE INDEX

<TABLE>
<S>                                                                                                                 <C>
ARTICLE 1 - LEASE OF PREMISES....................................................................................    1

   SECTION 1.01.  BASIC LEASE PROVISIONS AND DEFINITIONS.........................................................    1
   SECTION 1.02.  LEASE OF PREMISES..............................................................................    2

ARTICLE 2 - TERM AND POSSESSION..................................................................................    2

   SECTION 2.01.  TERM...........................................................................................    2
   SECTION 2.02.  CONSTRUCTION OF TENANT IMPROVEMENTS............................................................    2
   SECTION 2.03.  SURRENDER OF THE PREMISES......................................................................    3
   SECTION 2.04.  HOLDING OVER...................................................................................    3

ARTICLE 3 - RENT.................................................................................................    3

   SECTION 3.01.  BASE RENT......................................................................................    3
   SECTION 3.02.  ANNUAL RENTAL ADJUSTMENT DEFINITIONS...........................................................    3
   SECTION 3.03.  PAYMENT OF ADDITIONAL RENT.....................................................................    4
   SECTION 3.04.  LATE CHARGES...................................................................................    5
   SECTION 3.05.  MAXIMUM INCREASE IN OPERATING EXPENSES.........................................................    5

ARTICLE 4 - SECURITY DEPOSIT.....................................................................................    5

ARTICLE 5 - OCCUPANCY AND USE....................................................................................    5

   SECTION 5.01.  USE............................................................................................    5
   SECTION 5.02.  COVENANTS OF TENANT REGARDING USE..............................................................    5
   SECTION 5.03.  LANDLORD'S RIGHTS REGARDING USE................................................................    6

ARTICLE 6 - UTILITIES AND OTHER BUILDING SERVICES................................................................    6

   SECTION 6.01.  SERVICES TO BE PROVIDED........................................................................    6
   SECTION 6.02.  ADDITIONAL SERVICES............................................................................    7
   SECTION 6.03.  INTERRUPTION OF SERVICES.......................................................................    7

ARTICLE 7 - REPAIRS, MAINTENANCE AND ALTERATIONS.................................................................    7

   SECTION 7.01.  REPAIR AND MAINTENANCE OF BUILDING.............................................................    7
   SECTION 7.02.  REPAIR AND MAINTENANCE OF LEASED PREMISES......................................................    7
   SECTION 7.03.  ALTERATIONS....................................................................................    8

ARTICLE 8 - CASUALTY.............................................................................................    8

   SECTION 8.01.  CASUALTY.......................................................................................    8
   SECTION 8.02.  ALL RISK COVERAGE INSURANCE....................................................................    8

ARTICLE 9 - LIABILITY INSURANCE..................................................................................    9

   SECTION 9.01.  TENANT'S RESPONSIBILITY........................................................................    9
   SECTION 9.02.  TENANT'S INSURANCE.............................................................................    9
   SECTION 9.03.  LANDLORD'S RESPONSIBILITY......................................................................    9

ARTICLE 10 - EMINENT DOMAIN......................................................................................    9

ARTICLE 11 - ASSIGNMENT AND SUBLEASE.............................................................................   10

ARTICLE 12 - TRANSFERS BY LANDLORD...............................................................................   10

   SECTION 12.01.  SALE OF THE BUILDING..........................................................................   10
   SECTION 12.02.  SUBORDINATION AND ESTOPPEL CERTIFICATE........................................................   10

ARTICLE 13 - DEFAULT AND REMEDY..................................................................................   11

   SECTION 13.01.  DEFAULT.......................................................................................   11
   SECTION 13.02.  REMEDIES......................................................................................   11
   SECTION 13.03.  LANDLORD'S DEFAULT AND TENANT'S REMEDIES......................................................   12
   SECTION 13.04.  LIMITATION OF LANDLORD'S LIABILITY............................................................   12
   SECTION 13.05.  NONWAIVER OF DEFAULTS.........................................................................   12
   SECTION 13.06.  ATTORNEYS' FEES...............................................................................   12

ARTICLE 14 - LANDLORD'S RIGHT TO RELOCATE TENANT.................................................................   13
</TABLE>

<PAGE>

<TABLE>
<S>                                                                                                                 <C>
ARTICLE 15 - TENANT'S RESPONSIBILITY REGARDING ENVIRONMENTAL LAWS AND HAZARDOUS SUBSTANCES.......................   13

   SECTION 15.01.  ENVIRONMENTAL DEFINITIONS.....................................................................   13
   SECTION 15.02.  COMPLIANCE....................................................................................   13
   SECTION 15.03.  RESTRICTIONS ON TENANT........................................................................   13
   SECTION 15.04.  NOTICES, AFFIDAVITS, ETC......................................................................   13
   SECTION 15.05.  LANDLORD'S RIGHTS.............................................................................   14
   SECTION 15.06.  TENANT'S INDEMNIFICATION......................................................................   14
   SECTION 15.07.  EXISTING CONDITIONS...........................................................................   14

ARTICLE 16 - MISCELLANEOUS.......................................................................................   14

   SECTION 16.01.  BENEFIT OF LANDLORD AND TENANT................................................................   14
   SECTION 16.02.  GOVERNING LAW.................................................................................   14
   SECTION 16.03.  GUARANTY......................................................................................   14
   SECTION 16.04.  FORCE MAJEURE.................................................................................   14
   SECTION 16.05.  EXAMINATION OF LEASE..........................................................................   14
   SECTION 16.06.  INDEMNIFICATION FOR LEASING COMMISSIONS.......................................................   15
   SECTION 16.07.  NOTICES.......................................................................................   15
   SECTION 16.08.  PARTIAL INVALIDITY; COMPLETE AGREEMENT........................................................   15
   SECTION 16.09.  FINANCIAL STATEMENTS..........................................................................   15
   SECTION 16.10.  REPRESENTATIONS AND WARRANTIES................................................................   15
   SECTION 16.11.  AGENCY DISCLOSURE.............................................................................   15
   SECTION 16.12.  OPTION TO TERMINATE...........................................................................   15
</TABLE>

EXHIBITS

    Exhibit A - Leased Premises

    Exhibit B - Tenant Improvements

    Exhibit C - Rules and Regulations

    Exhibit D - Form of Unconditional Guaranty of Lease
<PAGE>

SEW/ACD/md/nm/dn
2/25/04

THIS LEASE is executed this 9 day of March, 2004, by and between DUKE REALTY
OHIO, an Indiana general partnership ("Landlord"), and POCKETSCRIPT, INC., an
Ohio corporation ("Tenant").

ARTICLE 1 - LEASE OF PREMISES

Section 1.01.  Basic Lease Provisions and Definitions.

A.       Leased Premises (shown outlined on Exhibit A attached hereto): Suite:
         207; Floor: 2nd; Building Name: 4770 Governor's Pointe; Address: 4770
         Duke Drive, Mason, Ohio 45040 ("Building");

B.       Rentable Area: approximately 5,608 rentable square feet;

         Landlord shall use commercially reasonable standards, consistently
         applied, in determining the Rentable Area and the rentable area of the
         Building. The Rentable Area shall include the area within the Leased
         Premises plus a pro rata portion of the area covered by the common
         areas within the Building, as reasonably determined by Landlord from
         time to time. Landlord's determination of Rentable Area shall be deemed
         correct for all purposes hereunder.

C.       Building Expense Percentage: 7.38%;

D.       Minimum Annual Rent:

         May 1, 2004 - August 31, 2004             $     0.00 (4 months)
         September 1, 2004 - April 30, 2005        $36,452.00 (8 months)
         May 1, 2005 - April 30, 2006              $56,360.40 per year
         May 1, 2006 - April 30, 2007              $58,042.80 per year
         May 1, 2007 - April 30, 2008              $59,725.20 per year
         May 1, 2008 - April 30, 2009              $61,407.60 per year
         May 1, 2009 - August 31, 2009             $21,030.00 (4 months);

E.       Monthly Rental Installments:

         May 1, 2004 - August 31, 2004             $      0.00 per month
         September 1, 2004 - April 30, 2005        $  4,556.50 per month
         May 1, 2005 - April 30, 2006              $  4,696.70 per month
         May 1, 2006 - April 30, 2007              $  4,836.90 per month
         May 1, 2007 - April 30, 2008              $  4,977.10 per month
         May 1, 2008 - April 30, 2009              $  5,117.30 per month
         May 1, 2009 - August 31, 2009             $  5,257.50 per month;

F.       Term: Five (5) years and four (4) months;

G.       Target Commencement Date: May 1, 2004;

H.       Security Deposit: $4,556.50;

I.       Brokers: Duke Realty Services Limited Partnership representing Landlord
         and The Staubach Company representing Tenant;

J.       Permitted Use: General office purposes;

<PAGE>

K.       Address for payments and notices as follows:

         Landlord:                  Duke Realty Ohio
                                    Attn:  Senior Property Manager
                                    4555 Lake Forest Drive, Suite 400
                                    Cincinnati, OH  45242

         With Rental
         Payments to:               Duke Realty Ohio
                                    75 Remittance Drive, Suite 3205
                                    Chicago, IL  60675-3205

         Tenant:                    PocketScript, Inc.
                                    4770 Duke Drive, Suite 207
                                    Mason, OH  45040

                                    Copy to:

                                    Zix Corporation
                                    Attn:  Accounts Payable
                                    2711 N. Haskell Avenue, Suite 2300
                                    Dallas, TX  75204-2960

L.       Guarantor: Zix Corporation, a Texas corporation.

Section 1.02. Lease of Premises.

Landlord hereby leases to Tenant and Tenant hereby leases from Landlord under
the terms and conditions herein the Leased Premises.

ARTICLE 2 - TERM AND POSSESSION

Section 2.01. Term.

The term of this Lease ("Lease Term") shall be for the period of time as set
forth in Section 1.01(F) hereof, and shall commence on the date (the
"Commencement Date") that is the later to occur of (i) the Target Commencement
Date; or (ii) substantial completion of the Tenant Improvements (as hereinafter
defined); provided, however, that such date shall not be extended as a result of
any Tenant-caused delays or change orders. Substantial completion shall mean the
date on which the Tenant Improvements have been completed in accordance with
Exhibit B, subject only to minor punchlist items which do not substantially
interfere with Tenant's use of the Leased Premises.

Section 2.02. Construction of Tenant Improvements.

(a)      Tenant has personally inspected the Leased Premises and accepts the
         same "AS IS" without representation or warranty by Landlord of any kind
         and with the understanding that Landlord shall have no responsibility
         with respect thereto except to construct in a good and workmanlike
         manner the improvements described on Exhibit B attached hereto and made
         a part hereof (the "Tenant Improvements").

(b)      Promptly following the Commencement Date, Tenant shall execute
         Landlord's Letter of Understanding, acknowledging, among other things,
         that Tenant has accepted the Leased Premises. If Tenant takes
         possession of and occupies the Leased Premises, then, subject to
         subsection (a) above, Tenant shall be deemed to have accepted the
         Leased Premises and that the condition of the Leased Premises and the
         Building was at the time satisfactory and in conformity with the
         provisions of this Lease in all respects.

                                      -2-

<PAGE>

Section 2.03. Surrender of the Premises.

Upon the expiration or earlier termination of this Lease, Tenant shall
immediately surrender the Leased Premises to Landlord in broom-clean condition
and in good order, condition and repair, reasonable wear and tear excepted.
Tenant shall remove its personal property, computer equipment, wiring and
cabling (including above ceiling) in the Leased Premises, at its sole cost and
expense. Tenant shall, at its expense, promptly repair any damage caused by any
such removal, and shall restore the Leased Premises to the condition existing
upon the Commencement Date, reasonable wear and tear excepted. All Tenant
property which is not removed within ten (10) days following Landlord's written
demand therefore shall be conclusively deemed to have been abandoned and
Landlord shall be entitled to dispose of such property at Tenant's cost without
incurring any liability to Tenant. The provisions of this section shall survive
the expiration or other termination of this Lease.

Section 2.04. Holding Over.

If Tenant retains possession of the Leased Premises after the expiration or
earlier termination of this Lease, unless otherwise agreed in writing by
Landlord, Tenant shall become a tenant from month to month at one hundred fifty
percent (150%) of the Monthly Rental Installment and Annual Rental Adjustment
for the Leased Premises in effect upon the date of such expiration or earlier
termination, and otherwise upon the terms, covenants and conditions herein
specified, so far as applicable. Acceptance by Landlord of rent after such
expiration or earlier termination shall not result in a renewal of this Lease.
Tenant shall vacate and surrender the Leased Premises to Landlord upon Tenant
being given thirty (30) days' prior written notice from Landlord to vacate
whether or not said notice is given on the rent paying date. This Section 2.04
shall in no way constitute a consent by Landlord to any holding over by Tenant
upon the expiration or earlier termination of this Lease, nor limit Landlord's
remedies in such event.

ARTICLE 3 - RENT

Section 3.01. Base Rent.

Tenant shall pay to Landlord the Minimum Annual Rent in the Monthly Rental
Installments in advance, without deduction or offset on the Commencement Date
and on or before the first day of each and every calendar month thereafter
during the Lease Term. The Monthly Rental Installments for partial calendar
months shall be prorated.

Section 3.02. Annual Rental Adjustment Definitions.

A.       "Annual Rental Adjustment" - shall mean the amount of Tenant's
         Proportionate Share of Operating Expenses for a particular calendar
         year.

B.       "Operating Expenses" - shall mean the amount of all of Landlord's costs
         and expenses paid or incurred in operating, repairing, replacing and
         maintaining the Building (including the Common Areas as defined below)
         in good condition and repair for a particular calendar year, including
         all additional costs and expenses which Landlord reasonably determines
         that it would have paid or incurred during such year if the Building
         had been fully occupied, including by way of illustration and not
         limitation: all Real Estate Taxes, as hereinafter defined, insurance
         premiums and deductibles; water, sewer, electrical and other utility
         charges other than the separately billed electrical and other charges
         paid by Tenant as provided in this Lease (or other tenants in the
         Building); service and other charges incurred in the repair,
         replacement, operation and maintenance of the elevators and the
         heating, ventilation and air-conditioning system; costs associated with
         providing fitness facilities, if any; cleaning and other janitorial
         services; tools and supplies; repair costs; landscape maintenance
         costs; security services; license, permit and inspection fees;
         management or administrative fees; supplies, costs, wages and related
         employee benefits payable for the management, maintenance and operation
         of the Building; maintenance, repair and replacement of the driveways,
         parking and sidewalk areas (including snow and ice removal), landscaped
         areas, and lighting; maintenance and repair costs, dues, fees and
         assessments incurred under any covenants or owners association (the
         "Covenants"). The

                                      -3-

<PAGE>

         cost of any capital improvement shall be amortized over the useful life
         of such improvement (as reasonably determined by Landlord), and only
         the amortized portion shall be included in Operating Expenses.
         Operating Expenses shall not include the following:

         1.       Leasing commissions.

         2.       The cost of tenant finish improvements provided solely for the
                  benefit of other tenants or proposed tenants in the Building.

         3.       Costs of correcting building code violations which violations
                  were in existence on the Commencement Date.

         4.       Depreciation on the Building.

         5.       The cost of services separately charged to and paid by another
                  tenant in the Building.

         6.       Interest payments and financing costs associated with Building
                  financing.

         7.       Legal fees associated with the preparation, interpretation
                  and/or enforcement of leases.

         8.       Repairs and replacements for which and to the extent that
                  Landlord has been reimbursed by insurance and/or paid pursuant
                  to warranties.

         9.       Advertising and promotional expenses.

         10.      Costs representing amounts paid to an affiliate of Landlord
                  for services or materials which are in excess of the amounts
                  which would have been paid in the absence of such
                  relationship.

         11.      Costs of the Tenant Improvements.

C.       "Tenant's Proportionate Share of Operating Expenses" - shall be an
         amount equal to the product of Tenant's Building Expense Percentage
         times the Building Operating Expenses.

D.       "Real Estate Taxes" - shall include any form of real estate tax or
         assessment or service payments in lieu thereof, and any license fee,
         commercial rental tax, improvement bond or other similar charge or tax
         (other than inheritance, personal income or estate taxes) imposed upon
         the Building or Common Areas (hereinafter defined) (or against
         Landlord's business of leasing the Building) by any authority having
         the power to so charge or tax, together with the actual costs and
         expenses (including legal and other fees) of contesting the validity or
         amount of Real Estate Taxes.

 E.      "Common Areas" - shall mean the areas of the Building and the land
         which are designed for use in common by all tenants of the Building and
         their respective employees, agents, customers, invitees and others, and
         includes, by way of illustration and not limitation, entrances and
         exits, hallways and stairwells, conference facilities, if any,
         elevators, restrooms, sidewalks, driveways, parking areas, landscaped
         areas and other areas as may be designated by Landlord as part of the
         Common Areas of the Building. Tenant shall have the non-exclusive
         right, in common with others, to the use of the Common Areas.

Section 3.03. Payment of Additional Rent.

In addition to the Minimum Annual Rent specified in this Lease, Tenant shall pay
to Landlord as "Additional Rent" for the Leased Premises, in each calendar year
or partial calendar year, during the Lease Term, an amount equal to the Annual
Rental Adjustment for such calendar year. The Annual Rental Adjustment shall be
estimated annually by Landlord, and written notice thereof shall be given to
Tenant prior to the beginning of each calendar year. Tenant shall pay to
Landlord each month, at the same time the Monthly Rental Installment is due, an
amount equal

                                      -4-

<PAGE>

to one-twelfth (1/12) of the estimated Annual Rental Adjustment. If Real Estate
Taxes or the cost of utility or janitorial services increase during a calendar
year, Landlord may increase the estimated Annual Rental Adjustment during such
year by giving Tenant written notice to that effect, and thereafter Tenant shall
pay to Landlord, in each of the remaining months of such year, an amount equal
to the amount of such increase in the estimated Annual Rental Adjustment divided
by the number of months remaining in such year. Within a reasonable time after
the end of each calendar year, Landlord shall prepare and deliver to Tenant a
statement showing the actual Annual Rental Adjustment. Within thirty (30) days
after receipt of the aforementioned statement, Tenant shall pay to Landlord, or
Landlord shall credit against the next rent payment or payments due from Tenant,
as the case may be, the difference between the actual Annual Rental Adjustment
for the preceding calendar year and the estimated amount paid by Tenant during
such year.

Section 3.04. Late Charges.

Tenant acknowledges that Landlord shall incur certain additional unanticipated
administrative and legal costs and expenses if Tenant fails to timely pay any
payment required hereunder. Therefore, in addition to the other remedies
available to Landlord hereunder, if any payment required to be paid by Tenant to
Landlord hereunder shall become overdue, such unpaid amount shall bear interest
from the due date thereof to the date of payment at the prime rate (as reported
in the Wall Street Journal) of interest ("Prime Rate") plus six percent (6%) per
annum.

Section 3.05. Maximum Increase in Operating Expenses.

Notwithstanding anything in this Lease to the contrary, Tenant will be
responsible for Tenant's Proportionate Share of Real Estate Taxes, including the
reasonable costs and expenses of contesting the validity or amount of Real
Estate Taxes, service payments in lieu of Real Estate Taxes, insurance premiums,
utilities, snow removal, management fees and covenants or owners association
fees and assessments ("Uncontrollable Expenses"), without regard to the level of
increase in any or all of the above in any year or other period of time.
Tenant's obligation to pay all other Building Operating Expenses which are not
Uncontrollable Expenses (herein "Controllable Expenses") shall be limited to a
five percent (5%) per annum increase over the amount the Controllable Expenses
for the immediately preceding calendar year would have been had the Controllable
Expenses increased at the rate of five percent (5%) in all previous calendar
years beginning with the actual Controllable Expenses for the year ending
December 31, 2004.

ARTICLE 4 - SECURITY DEPOSIT

Upon execution of this Lease, Tenant shall deposit with Landlord the Security
Deposit as security for the performance by Tenant of all of Tenant's obligations
contained in this Lease. In the event of a default by Tenant, Landlord may apply
all or any part of the Security Deposit to cure all or any part of such default;
and Tenant agrees to promptly, upon demand, deposit such additional sum with
Landlord as may be required to maintain the full amount of the Security Deposit.
All sums held by Landlord pursuant to this section shall be without interest and
may be commingled by Landlord. At the end of the Lease Term, Landlord shall
return the Security Deposit to Tenant, less any amounts required to cure any
Tenant defaults.

ARTICLE 5 - OCCUPANCY AND USE

Section 5.01. Use.

The Leased Premises shall be used by Tenant for the Permitted Use and for no
other purposes without the prior written consent of Landlord.

Section 5.02. Covenants of Tenant Regarding Use.

Tenant shall (i) use and maintain the Leased Premises and conduct its business
thereon in a safe, careful, reputable and lawful manner, (ii) comply with the
Covenants and all laws, rules, regulations, orders, ordinances, directions and
requirements of any governmental authority or agency, now in force or which may
hereafter be in force, including without limitation those which shall impose
upon Landlord or Tenant any duty with respect to or triggered by a change in

                                      -5-

<PAGE>

the use or occupation of, or any improvement or alteration to, the Leased
Premises, (iii) comply with and obey all reasonable directions of Landlord,
including the Building Rules and Regulations attached hereto as Exhibit C and as
may be modified from time to time by Landlord on reasonable notice to Tenant.
Tenant shall not do or permit anything to be done in or about the Leased
Premises which will in any way obstruct or interfere with the rights of other
tenants or occupants of the Building or injure or annoy them. Landlord shall not
be responsible to Tenant for the non-performance by any other tenant or occupant
of the Building of any of the Building Rules and Regulations, but agrees to take
reasonable measures to assure such other tenant's compliance. Tenant shall not
use the Leased Premises, or allow the Leased Premises to be used, for any
purpose or in any manner which would invalidate any policy of insurance now or
hereafter carried on the Building or increase the rate of premiums payable on
any such insurance policy unless Tenant reimburses Landlord for any increase in
premium charged.

Section 5.03. Landlord's Rights Regarding Use.

In addition to the rights specified elsewhere in this Lease, Landlord shall have
the following rights regarding the use of the Leased Premises or the Common
Areas, each of which may be exercised without notice or liability to Tenant: (a)
Landlord may install such signs, advertisements or notices or tenant
identification information on the directory board or tenant access doors as it
shall deem necessary or proper; (b) Landlord shall have the right at any time to
control, change or otherwise alter the Common Areas in such manner as it deems
necessary or proper; (c) Landlord, its employees and agents and any mortgagee of
the Building shall have the right to enter any part of the Leased Premises at
reasonable times upon reasonable notice except in the event of an emergency
where no notice shall be required for the purposes of examining or inspecting
the same, showing the same to prospective purchasers, mortgagees or tenants and
making such repairs, alterations or improvements to the Leased Premises or the
Building as Landlord may deem necessary or desirable, provided, however, that
any repairs made by Landlord shall be at Tenant's expense except as provided in
Section 7.02 hereof. Landlord shall incur no liability to Tenant for such entry,
nor shall such entry constitute an eviction of Tenant or a termination of this
Lease, or entitle Tenant to any abatement of rent therefor.

ARTICLE 6 - UTILITIES AND OTHER BUILDING SERVICES

Section 6.01. Services to be Provided.

Provided Tenant is not in default, Landlord shall furnish to Tenant, except as
noted below, the following utilities and other building services to the extent
reasonably necessary for Tenant's comfortable use and occupancy of the Leased
Premises for the Permitted Use or as may be required by law or directed by
governmental authority:

(a)      Heating, ventilation and air-conditioning between the hours of 8:00
         a.m. and 6:00 p.m. Monday through Friday and 9:00 a.m. to 1:00 p.m. on
         Saturday of each week except on legal holidays;

(b)      Electrical current for lighting and office equipment usage not to
         exceed four (4) watts per square foot;

(c)      Water in the Common Areas for lavatory and drinking purposes;

(d)      Automatic elevator service;

(e)      Cleaning and janitorial service in the Leased Premises and Common Areas
         on Monday through Friday of each week except legal holidays; provided,
         however, Tenant shall be responsible for carpet cleaning other than
         routine vacuuming;

(f)      Washing of windows at intervals reasonably established by Landlord;

(g)      Replacement of all lamps, bulbs, starters and ballasts in Building
         standard lighting as required from time to time as a result of normal
         usage;

                                      -6-

<PAGE>

(h)      Cleaning and maintenance of the Common Areas, including the removal of
         rubbish, ice and snow; and

(i)      Repair and maintenance to the extent specified elsewhere in this Lease.

In the event of utility deregulation, Landlord may choose the utility service
provider.

Section 6.02. Additional Services.

If Tenant requests utilities or building services in addition to those
identified above or any of the above utilities or building services in
frequency, scope, quality or quantity substantially greater than those which
Landlord determines are normally required by other tenants in the Building for
the Permitted Use, then Landlord shall use reasonable efforts to attempt to
furnish Tenant with such additional utilities or building services. In the event
Landlord is able to and does furnish such additional utilities or building
services, the costs thereof shall be borne by Tenant, who shall reimburse
Landlord monthly for the same as Additional Rent at the same time Monthly Rental
Installments and other Additional Rent is due.

If any lights, density of staff, machines or equipment used by Tenant in the
Leased Premises materially affect the temperature otherwise maintained by the
Building's air-conditioning system or generate substantially more heat in the
Leased Premises than that which would normally be generated by that typically
used by other tenants in the Building or by tenants in comparable office
buildings, then Landlord shall have the right to install any machinery or
equipment which Landlord considers reasonably necessary in order to restore the
temperature balance between the Leased Premises and the rest of the Building,
including equipment which modifies the Building's air-conditioning system. All
costs expended by Landlord to install any such machinery and equipment and any
additional costs of operation and maintenance in connection therewith shall be
borne by Tenant, who shall reimburse Landlord for the same as provided in this
Section 6.02.

Section 6.03. Interruption of Services.

Tenant understands, acknowledges and agrees that any one or more of the
utilities or other Building services identified in Sections 6.01, 6.02 or
otherwise hereunder may be interrupted by reason of accident, emergency or other
causes beyond Landlord's control, or may be discontinued or diminished
temporarily by Landlord or other persons until certain repairs, alterations or
improvements can be made. Landlord shall not be liable in damages or otherwise
for any failure or interruption of any utility service and no such failure or
interruption shall entitle Tenant to terminate this Lease or withhold sums due
hereunder.

ARTICLE 7 - REPAIRS, MAINTENANCE AND ALTERATIONS

Section 7.01. Repair and Maintenance of Building.

Subject to Section 7.02 and except for any repairs made necessary by the
negligence, misuse, or default of Tenant, its employees, agents, customers and
invitees, Landlord shall make all necessary repairs to the roofs, exterior
walls, exterior doors, windows, corridors and other Common Areas, and Landlord
shall keep the Building in a safe, clean and neat condition and use reasonable
efforts to keep all equipment used in common with other tenants in good
condition and repair.

Section 7.02. Repair and Maintenance of Leased Premises.

Landlord shall keep and maintain the Leased Premises in good order, condition
and repair. Except for ordinary wear and tear and damage which Tenant is not
obligated to repair as provided elsewhere in this Lease, the cost of all repairs
and maintenance to the Leased Premises shall be borne by Tenant (except as
provided in Section 7.02 hereof), who shall be separately billed and shall
reimburse Landlord for the same as Additional Rent, or as a part of Operating
Expenses.

                                      -7-

<PAGE>

Section 7.03. Alterations.

Tenant shall not permit alterations in or to the Leased Premises unless and
until the plans have been approved by Landlord in writing. As a condition of
such approval, Landlord may require Tenant to remove the alterations and restore
the Leased Premises upon termination of this Lease to the condition existing
upon the Commencement Date, reasonable wear and tear excepted; otherwise, all
such alterations shall at Landlord's option become a part of the realty and the
property of Landlord, and shall not be removed by Tenant. Tenant shall ensure
that all alterations shall be made in accordance with all applicable laws,
regulations and building codes, in a good and workmanlike manner and of quality
equal to or better than the original construction of the Building. Upon
completion of the work, Tenant shall provide lien waivers from the
subcontractors or a final affidavit of lien waiver from the general contractor,
and such lien waiver shall be in a form acceptable to Landlord. No person shall
be entitled to any lien derived through or under Tenant for any labor or
material furnished to the Leased Premises, and nothing in this Lease shall be
construed to constitute a consent by Landlord to the creation of any lien. If
any lien is filed against the Leased Premises for work claimed to have been done
for or material claimed to have been furnished to Tenant, Tenant shall cause
such lien to be discharged of record within thirty (30) days after filing.
Tenant shall indemnify Landlord from all costs, losses, expenses and attorneys'
fees in connection with any construction or alteration and any related lien.

ARTICLE 8 - CASUALTY

Section 8.01. Casualty.

In the event of total or partial destruction of the Building or the Leased
Premises by fire or other casualty, Landlord agrees to promptly restore and
repair same; provided, however, Landlord's obligation hereunder shall be limited
to the reconstruction of such of the tenant finish improvements as were
originally required to be made by Landlord, if any. Rent shall proportionately
abate during the time that the Leased Premises or part thereof are unusable
because of any such damage. Notwithstanding the foregoing, if the Leased
Premises are (i) so destroyed that they cannot be repaired or rebuilt within one
hundred eighty (180) days from the casualty date; or (ii) destroyed by a
casualty which is not covered by the insurance required hereunder or, if
covered, such insurance proceeds are not released by any mortgagee entitled
thereto or are insufficient to rebuild the Building and the Leased Premises;
then, in case of a clause (i) casualty, either Landlord or Tenant may, or, in
the case of a clause (ii) casualty, then Landlord may, upon thirty (30) days'
written notice to the other party, terminate this Lease with respect to matters
thereafter accruing.

Section 8.02. All Risk Coverage Insurance.

During the Lease Term, Landlord shall maintain all risk coverage insurance on
the Building, but shall not protect Tenant's property on the Leased Premises;
and, notwithstanding the provisions of Section 9.01 and Section 9.03, neither
party shall be liable for any casualty damage to the other's property,
regardless of cause, including the negligence of either party and its employees,
agents and invitees. Tenant hereby expressly waives any right of recovery
against Landlord for casualty damage to any property of Tenant located in or
about the Leased Premises, however caused, including the negligence of Landlord
and its employees, agents and invitees. Notwithstanding the provisions of
Section 9.01 below, Landlord hereby expressly waives any rights of recovery
against Tenant for casualty damage to the Leased Premises or the Building,
however caused, including the negligence of Landlord and its employees, agents
and invitees. All insurance policies maintained by Landlord or Tenant as
provided in this Lease shall contain an agreement by the insurer waiving the
insurer's right of subrogation against the other party to this Lease.

                                      -8-

<PAGE>

ARTICLE 9 - LIABILITY INSURANCE

Section 9.01. Tenant's Responsibility.

Tenant shall assume the risk of, be responsible for, have the obligation to
insure against, and indemnify Landlord and hold it harmless from any and all
liability for any loss of or damage or injury to any person (including death
resulting therefrom) or property occurring in the Leased Premises, regardless of
cause, except for any loss or damage covered by Landlord's all risk coverage
insurance as provided in Section 8.02 and except for that caused directly by the
sole negligence of Landlord or its employees, agents, customers or invitees; and
Tenant hereby releases Landlord from any and all liability for the same.
Tenant's obligation to indemnify Landlord hereunder shall include the duty to
defend against any claims asserted by reason of such loss, damage or injury and
to pay any judgments, settlements, costs, fees and expenses, including
reasonable attorneys' fees, incurred in connection therewith. This provision
shall survive the expiration or earlier termination of this Lease.

Section 9.02. Tenant's Insurance.

Tenant shall carry general public liability and property damage insurance,
issued by one or more insurance companies reasonably acceptable to Landlord,
with the following minimum coverages:

(a)      Worker's Compensation: minimum statutory amount.

(b)      Commercial General Liability Insurance, including blanket, contractual
         liability, broad form property damage, personal injury, completed
         operations, products liability, and fire damage: Not less than
         $3,000,000 Combined Single Limit for both bodily injury and property
         damage.

(c)      All Risk Coverage, Vandalism and Malicious Mischief, and Sprinkler
         Leakage insurance, if applicable, for the full cost of replacement of
         Tenant's property.

(d)      Business interruption insurance.

The insurance policies shall protect Tenant and Landlord as their interests may
appear, naming Landlord and Landlord's managing agent and mortgagee as
additional insureds, and shall provide that they may not be canceled on less
than thirty (30) days' prior written notice to Landlord. Tenant shall furnish
Landlord with Certificates of Insurance evidencing all required coverages on or
before the Commencement Date. If Tenant fails to carry such insurance and
furnish Landlord with such Certificates of Insurance after a request to do so,
Landlord may obtain such insurance and collect the cost thereof from Tenant.

Section 9.03. Landlord's Responsibility.

Landlord shall assume the risk of, be responsible for, have the obligation to
insure against, and indemnify Tenant and hold it harmless from any and all
liability for any loss of or damage or injury to any person (including death
resulting therefrom) or property (other than Tenant's property as provided in
Section 8.02) occurring in, on or about the Common Areas, regardless of cause,
except for that caused by the sole negligence of Tenant or its employees,
agents, customers or invitees; and Landlord hereby releases Tenant from any and
all liability for the same. Landlord's obligation to indemnify Tenant hereunder
shall include the duty to defend against any claims asserted by reason of such
loss, damage or injury and to pay any judgments, settlements, costs, fees and
expenses, including reasonable attorneys' fees, incurred in connection
therewith. This provision shall survive the expiration or earlier termination of
this Lease.

ARTICLE 10 - EMINENT DOMAIN

If all or any substantial part of the Building or Common Areas shall be acquired
by the exercise of eminent domain, Landlord may terminate this Lease by giving
written notice to Tenant on or before the date possession thereof is so taken.
If all or any part of the Leased Premises shall be acquired by the exercise of
eminent domain so that the Leased Premises shall become unusable

                                      -9-

<PAGE>

by Tenant for the Permitted Use, Tenant may terminate this Lease by giving
written notice to Landlord as of the date possession thereof is so taken. All
damages awarded shall belong to Landlord; provided, however, that Tenant may
claim dislocation damages if such amount is not subtracted from Landlord's
award.

ARTICLE 11 - ASSIGNMENT AND SUBLEASE

Tenant shall not assign this Lease or sublet the Leased Premises in whole or in
part without Landlord's prior written consent, which consent shall not be
unreasonably withheld, delayed or denied. If Tenant desires to assign or
sublease this Lease to any entity or individual unrelated to Tenant, then Tenant
shall provide Landlord with six (6) months prior written notice of its desire to
assign this Lease or sublease the Leased Premises. Landlord, at its option,
shall have six (6) months after receipt of such notice to try to assign the
Lease or sublease the Leased Premises prior to Tenant's marketing of the Lease
or Leased Premises for assignment or sublease. In the event of any permitted
assignment or subletting, Tenant shall remain primarily liable hereunder, and
any building signage, extension, expansion, rights of first offer, rights of
first refusal or other options granted to Tenant under this Lease shall be
rendered void and of no further force or effect. The acceptance of rent from any
other person shall not be deemed to be a waiver of any of the provisions of this
Lease or to be a consent to the assignment of this Lease or the subletting of
the Leased Premises. Without in any way limiting Landlord's right to refuse to
consent to any assignment or subletting of this Lease, Landlord reserves the
right to refuse to give such consent if in Landlord's opinion (i) the Leased
Premises are or may be in any way adversely affected; (ii) the business
reputation of the proposed assignee or subtenant is unacceptable; (iii) the
financial worth of the proposed assignee or subtenant is insufficient to meet
the obligations hereunder; or (iv) the proposed assignee or subtenant is a
prospective tenant reviewing a proposal from Landlord. Landlord further
expressly reserves the right to refuse to give its consent to any subletting if
the proposed rent is to be less than the then current rent for similar premises
in the Building, or if the proposed assignee or subtenant is an existing tenant
in the Building or in Governor's Pointe. If Landlord refuses to give its consent
to any proposed assignment or subletting, Landlord may, at its option, within
thirty (30) days after receiving a request to consent, terminate this Lease by
giving Tenant thirty (30) days' prior written notice of such termination,
whereupon each party shall be released from all further obligations and
liability hereunder. In no event shall Tenant sublease the Leased Premises in
whole or in part for a per square foot rental rate less than the per square foot
rental rate hereunder. If Tenant shall make any assignment or sublease, with
Landlord's consent, for a rental in excess of the rent payable under this Lease,
Tenant shall pay to Landlord fifty percent (50%) of any such excess rental upon
receipt. Tenant agrees to reimburse Landlord for reasonable accounting and
attorneys' fees incurred in conjunction with the processing and documentation of
any requested assignment, subletting or any other hypothecation of this Lease or
Tenant's interest in and to the Leased Premises.

ARTICLE 12 - TRANSFERS BY LANDLORD

Section 12.01. Sale of the Building.

Landlord shall have the right to sell the Building at any time during the Lease
Term, subject only to the rights of Tenant hereunder; and such sale shall
operate to release Landlord from liability hereunder after the date of such
conveyance.

Section 12.02. Subordination and Estoppel Certificate.

Landlord shall have the right to subordinate this Lease to any mortgage
presently existing or hereafter placed upon the Building by so declaring in such
mortgage. Within ten (10) days following receipt of a written request from
Landlord, Tenant shall execute and deliver to Landlord, without cost, any
instrument which Landlord deems reasonably necessary or desirable to confirm the
subordination of this Lease and an estoppel certificate in such form as Landlord
may reasonably request certifying (i) that this Lease is in full force and
effect and unmodified or stating the nature of any modification, (ii) the date
to which rent has been paid, (iii) that there are not, to Tenant's knowledge,
any uncured defaults or specifying such defaults if any are claimed, and (iv)
any other matters or state of facts reasonably required respecting the Lease.
Such estoppel may be relied upon by Landlord and by any purchaser or mortgagee
of the Building.

                                      -10-

<PAGE>

Notwithstanding the foregoing, if the mortgagee shall take title to the Leased
Premises through foreclosure or deed in lieu of foreclosure, Tenant shall be
allowed to continue in possession of the Leased Premises as provided for in this
Lease so long as Tenant shall not be in default.

ARTICLE 13 - DEFAULT AND REMEDY

Section 13.01. Default.

The occurrence of any of the following shall be a "Default":

(a)      Tenant fails to pay any Monthly Rental Installment or Additional Rent
         within five (5) days after the same is due, or Tenant fails to pay any
         other amounts due Landlord from Tenant within ten (10) days after the
         same is due.

(b)      Tenant fails to perform or observe any other term, condition, covenant
         or obligation required under this Lease for a period of thirty (30)
         days after notice thereof from Landlord; provided, however, that if the
         nature of Tenant's default is such that more than thirty (30) days are
         reasonably required to cure, then such default shall be deemed to have
         been cured if Tenant commences such performance within said thirty (30)
         day period and thereafter diligently completes the required action
         within a reasonable time.

(c)      Tenant shall vacate or abandon the Leased Premises, or fail to occupy
         the Leased Premises or any substantial portion thereof for a period of
         thirty (30) days.

(d)      Tenant shall assign or sublet all or a portion of the Leased Premises
         in contravention of the provisions of Article 11 of this Lease.

(e)      All or substantially all of Tenant's assets in the Leased Premises or
         Tenant's interest in this Lease are attached or levied under execution
         (and Tenant does not discharge the same within sixty (60) days
         thereafter); a petition in bankruptcy, insolvency or for reorganization
         or arrangement is filed by or against Tenant (and Tenant fails to
         secure a stay or discharge thereof within sixty (60) days thereafter);
         Tenant is insolvent and unable to pay its debts as they become due;
         Tenant makes a general assignment for the benefit of creditors; Tenant
         takes the benefit of any insolvency action or law; the appointment of a
         receiver or trustee in bankruptcy for Tenant or its assets if such
         receivership has not been vacated or set aside within thirty (30) days
         thereafter; or, dissolution or other termination of Tenant's corporate
         charter if Tenant is a corporation.

Section 13.02. Remedies.

Upon the occurrence of any Default, Landlord shall have the following rights and
remedies, in addition to those allowed by law or in equity, any one or more of
which may be exercised without further notice to Tenant:

(a)      Landlord may apply the Security Deposit or re-enter the Leased Premises
         and cure any Default of Tenant, and Tenant shall reimburse Landlord as
         Additional Rent for any costs and expenses which Landlord thereby
         incurs; and Landlord shall not be liable to Tenant for any loss or
         damage which Tenant may sustain by reason of Landlord's action.

(b)      Landlord may terminate this Lease or, without terminating this Lease,
         terminate Tenant's right to possession of the Leased Premises as of the
         date of such Default, and thereafter (i) neither Tenant nor any person
         claiming under or through Tenant shall be entitled to possession of the
         Leased Premises, and Tenant shall immediately surrender the Leased
         Premises to Landlord; and (ii) Landlord may re-enter the Leased
         Premises and dispossess Tenant and any other occupants of the Leased
         Premises by any lawful means and may remove their effects, without
         prejudice to any other remedy which Landlord may have. Upon the
         termination of this Lease, Landlord may declare the present value
         (discounted at the Prime Rate) of all rent which would have been due
         under this Lease for the balance of the Lease Term to be immediately
         due and payable, whereupon Tenant shall be obligated to pay the same to
         Landlord, together with all loss or damage which Landlord may sustain
         by reason of Tenant's Default ("Default Damages"), which shall include
         without

                                      -11-

<PAGE>

         limitation expenses of preparing the Leased Premises for re-letting,
         demolition, repairs, tenant finish improvements, brokers' commissions
         and attorneys' fees, it being expressly understood and agreed that the
         liabilities and remedies specified in this subsection (b) shall survive
         the termination of this Lease.

(c)      Landlord may, without terminating this Lease, re-enter the Leased
         Premises and re-let all or any part thereof for a term different from
         that which would otherwise have constituted the balance of the Lease
         Term and for rent and on terms and conditions different from those
         contained herein, whereupon Tenant shall be immediately obligated to
         pay to Landlord as liquidated damages the present value (discounted at
         the Prime Rate) of the difference between the rent provided for herein
         and that provided for in any lease covering a subsequent re-letting of
         the Leased Premises, for the period which would otherwise have
         constituted the balance of the Lease Term, together with all of
         Landlord's Default Damages.

(d)      Landlord may sue for injunctive relief or to recover damages for any
         loss resulting from the Default.

(e)      In addition to the defaults and remedies described above, the parties
         agree that if Tenant is in violation of the performance of any (but not
         necessarily the same) material term or condition of this Lease three
         (3) or more times during any twelve (12) month period, regardless of
         whether such violations are ultimately cured, then such conduct shall,
         at Landlord's option, represent a separate Default.

Section 13.03. Landlord's Default and Tenant's Remedies.

Landlord shall be in default if it fails to perform any term, condition,
covenant or obligation required under this Lease for a period of thirty (30)
days after written notice thereof from Tenant to Landlord; provided, however,
that if the term, condition, covenant or obligation to be performed by Landlord
is such that it cannot reasonably be performed within thirty days, such default
shall be deemed to have been cured if Landlord commences such performance within
said thirty-day period and thereafter diligently undertakes to complete the
same. Upon the occurrence of any such default, Tenant may sue for injunctive
relief or to recover damages for any loss directly resulting from the breach,
but Tenant shall not be entitled to terminate this Lease or withhold, offset or
abate any sums due hereunder.

Section 13.04. Limitation of Landlord's Liability.

If Landlord shall fail to perform any term, condition, covenant or obligation
required to be performed by it under this Lease and if Tenant shall, as a
consequence thereof, recover a money judgment against Landlord, Tenant agrees
that it shall look solely to Landlord's right, title and interest in and to the
Building for the collection of such judgment; and Tenant further agrees that no
other assets of Landlord shall be subject to levy, execution or other process
for the satisfaction of Tenant's judgment.

Section 13.05. Nonwaiver of Defaults.

Neither party's failure or delay in exercising any of its rights or remedies or
other provisions of this Lease shall constitute a waiver thereof or affect its
right thereafter to exercise or enforce such right or remedy or other provision.
No waiver of any default shall be deemed to be a waiver of any other default.
Landlord's receipt of less than the full rent due shall not be construed to be
other than a payment on account of rent then due, nor shall any statement on
Tenant's check or any letter accompanying Tenant's check be deemed an accord and
satisfaction. No act or omission by Landlord or its employees or agents during
the Lease Term shall be deemed an acceptance of a surrender of the Leased
Premises, and no agreement to accept such a surrender shall be valid unless in
writing and signed by Landlord.

Section 13.06. Attorneys' Fees.

If either party defaults in the performance or observance of any of the terms,
conditions, covenants or obligations contained in this Lease and the
non-defaulting party obtains a judgment

                                      -12-

<PAGE>

against the defaulting party, then the defaulting party agrees to reimburse the
non-defaulting party for reasonable attorneys' fees incurred in connection
therewith.

ARTICLE 14 - LANDLORD'S RIGHT TO RELOCATE TENANT

Landlord shall have the right upon at least thirty (30) days' prior written
notice to Tenant to relocate Tenant and to substitute for the Leased Premises
other space in the Building or in another building owned by Landlord, or an
affiliated entity of Landlord, in the vicinity containing at least as much
rentable area as the Leased Premises. Such substituted space shall be improved
by Landlord, at its expense, with improvements at least equal in quantity and
quality to those in the Leased Premises. Landlord shall reimburse Tenant for all
reasonable expenses incurred in connection with such relocation, including the
costs for printing of stationery and business cards with Tenant's new address.
In no event shall Landlord be liable to Tenant for any consequential damages as
a result of any such relocation, including, but not limited to, loss of business
income or opportunity.

ARTICLE 15 - TENANT'S RESPONSIBILITY REGARDING ENVIRONMENTAL LAWS AND HAZARDOUS
SUBSTANCES

Section 15.01. Environmental Definitions.

A.       "Environmental Laws" - All present or future federal, state and
         municipal laws, ordinances, rules and regulations applicable to the
         environmental and ecological condition of the Leased Premises, the
         rules and regulations of the Federal Environmental Protection Agency or
         any other federal, state or municipal agency or governmental board or
         entity having jurisdiction over the Leased Premises.

B.       "Hazardous Substances" - Those substances included within the
         definitions of "hazardous substances," "hazardous materials," "toxic
         substances" "solid waste" or "infectious waste" under Environmental
         Laws.

Section 15.02. Compliance.

Tenant, at its sole cost and expense, shall promptly comply with the
Environmental Laws including any notice from any source issued pursuant to the
Environmental Laws or issued by any insurance company which shall impose any
duty upon Tenant with respect to the use, occupancy, maintenance or alteration
of the Leased Premises whether such notice shall be served upon Landlord or
Tenant.

Section 15.03. Restrictions on Tenant.

Tenant shall operate its business and maintain the Leased Premises in compliance
with all Environmental Laws. Tenant shall not cause or permit the use,
generation, release, manufacture, refining, production, processing, storage or
disposal of any Hazardous Substances on, under or about the Leased Premises, or
the transportation to or from the Leased Premises of any Hazardous Substances,
except as necessary and appropriate for its Permitted Use in which case the use,
storage or disposal of such Hazardous Substances shall be performed in
compliance with the Environmental Laws and the highest standards prevailing in
the industry.

Section 15.04. Notices, Affidavits, Etc.

Tenant shall immediately notify Landlord of (i) any violation by Tenant, its
employees, agents, representatives, customers, invitees or contractors of the
Environmental Laws on, under or about the Leased Premises, or (ii) the presence
or suspected presence of any Hazardous Substances on, under or about the Leased
Premises and shall immediately deliver to Landlord any notice received by Tenant
relating to (i) and (ii) above from any source. Tenant shall execute affidavits,
representations and the like within five (5) days of Landlord's request therefor
concerning Tenant's best knowledge and belief regarding the presence of any
Hazardous Substances on, under or about the Leased Premises.

                                      -13-

<PAGE>

Section 15.05. Landlord's Rights.

Landlord and its agents shall have the right, but not the duty, upon advance
notice (except in the case of emergency when no notice shall be required) to
inspect the Leased Premises and conduct tests thereon to determine whether or
the extent to which there has been a violation of Environmental Laws by Tenant
or whether there are Hazardous Substances on, under or about the Leased
Premises. In exercising its rights herein, Landlord shall use reasonable efforts
to minimize interference with Tenant's business but such entry shall not
constitute an eviction of Tenant, in whole or in part, and Landlord shall not be
liable for any interference, loss, or damage to Tenant's property or business
caused thereby.

Section 15.06. Tenant's Indemnification.

Tenant shall indemnify Landlord and Landlord's managing agent from any and all
claims, losses, liabilities, costs, expenses and damages, including attorneys'
fees, costs of testing and remediation costs, incurred by Landlord in connection
with any breach by Tenant of its obligations under this Article 15. The
covenants and obligations under this Article 15 shall survive the expiration or
earlier termination of this Lease.

Section 15.07. Existing Conditions.

Notwithstanding anything contained in this Article 15 to the contrary, Tenant
shall not have any liability to Landlord under this Article 15 resulting from
any conditions existing, or events occurring, or any Hazardous Substances
existing or generated, at, in, on, under or in connection with the Leased
Premises prior to the Commencement Date of this Lease except to the extent
Tenant exacerbates the same.

ARTICLE 16 - MISCELLANEOUS

Section 16.01. Benefit of Landlord and Tenant.

This Lease shall inure to the benefit of and be binding upon Landlord and Tenant
and their respective successors and assigns.

Section 16.02. Governing Law.

This Lease shall be governed in accordance with the laws of the State where the
Building is located.

Section 16.03. Guaranty.

In consideration of Landlord's leasing the Leased Premises to Tenant, Tenant
shall provide Landlord with a Guaranty of Lease in the form attached hereto as
Exhibit D, executed by the Guarantor.

Section 16.04. Force Majeure.

Landlord and Tenant (except with respect to the payment of any monetary
obligation) shall be excused for the period of any delay in the performance of
any obligation hereunder when such delay is occasioned by causes beyond its
control, including but not limited to work stoppages, boycotts, slowdowns or
strikes; shortages of materials, equipment, labor or energy; unusual weather
conditions; or acts or omissions of governmental or political bodies.

Section 16.05. Examination of Lease.

Submission of this instrument for examination or signature to Tenant does not
constitute a reservation of or option for Lease, and it is not effective as a
Lease or otherwise until execution by and delivery to both Landlord and Tenant.

                                      -14-

<PAGE>

Section 16.06. Indemnification for Leasing Commissions.

The parties hereby represent and warrant that the only real estate brokers
involved in the negotiation and execution of this Lease are the Brokers. Each
party shall indemnify the other from any and all liability for the breach of
this representation and warranty on its part and shall pay any compensation to
any other broker or person who may be entitled thereto.

Section 16.07. Notices.

Any notice required or permitted to be given under this Lease or by law shall be
deemed to have been given if it is written and delivered in person or by
overnight courier or mailed by certified mail, postage prepaid, to the party who
is to receive such notice at the address specified in Article 1. If sent by
overnight courier, the notice shall be deemed to have been given one (1) day
after sending. If mailed, the notice shall be deemed to have been given on the
date which is three (3) business days following mailing. Either party may change
its address by giving written notice thereof to the other party.

Section 16.08. Partial Invalidity; Complete Agreement.

If any provision of this Lease shall be held to be invalid, void or
unenforceable, the remaining provisions shall remain in full force and effect.
This Lease represents the entire agreement between Landlord and Tenant covering
everything agreed upon or understood in this transaction. There are no oral
promises, conditions, representations, understandings, interpretations or terms
of any kind as conditions or inducements to the execution hereof or in effect
between the parties. No change or addition shall be made to this Lease except by
a written agreement executed by Landlord and Tenant.

Section 16.09. Financial Statements.

The financial statements of Guarantor are publicly available on the web site of
the Securities and Exchange Commission (www.sec.gov), as Guarantor, Zix
Corporation (NASDAQ: ZIXI), is a publicly-held entity and it is obligated to
file audited, quarterly financial statements with the SEC.

Section 16.10. Representations and Warranties.

The undersigned represent and warrant that (i) such party is duly organized,
validly existing and in good standing (if applicable) in accordance with the
laws of the state under which it was organized; and (ii) the individual
executing and delivering this Lease has been properly authorized to do so, and
such execution and delivery shall bind such party.

Section 16.11. Agency Disclosure.

Tenant acknowledges having previously received the Agency Disclosure Statement
attached. The broker as provided in Item I of the Basic Lease Provisions, its
agents and employees, have represented only Landlord, and have not in any way
represented Tenant, in the marketing, negotiation, and completion of this lease
transaction.

Section 16.12. Option to Terminate.

Provided Tenant is not in default hereunder, Tenant shall have the option to
terminate this Lease effective as of August 31, 2007. This option shall be
exercised by (i) Tenant's giving written notice to Landlord of its intention to
terminate on or before December 31, 2006, and (ii) Tenant's payment to Landlord
of an amount equal to the sum of four (4) months of the then current Monthly
Rental Installment and Annual Rental Adjustment, the unamortized Tenant
Improvements and the unamortized broker's commission, which payment shall
accompany the notice provided in (i) above. Such payment is made in
consideration for Landlord's grant of this option to terminate, to compensate
Landlord for rental and other concessions given to Tenant, and for other good
and valuable consideration. Such payment shall not in any manner affect Tenant's
obligations to pay Minimum Annual Rent and Annual Rental Adjustment or to
perform

                                      -15-

<PAGE>

its obligations under the Lease up to and including the date of termination.
Failure to timely and properly exercise this option shall forever waive and
extinguish it. If such option is validly exercised, then upon such termination,
Tenant shall surrender the Leased Premises to Landlord in accordance with the
terms of this Lease and each party shall be released from further liability
hereunder; provided, however, that such termination shall not affect any right
or obligation arising prior to termination or which survives termination of the
Lease.

         IN WITNESS WHEREOF, the parties hereto have executed this Lease as of
the day and year first above written.

                                      LANDLORD:

                                      DUKE REALTY OHIO,
                                      an Indiana general partnership

                                      By:   Duke Realty Limited Partnership,
                                            a general partner

                                            By:   Duke Realty Corporation,
                                                  its general partner

                                                   By:  /s/ Kevin T. Rogus
                                                       ------------------------
                                                          Kevin T. Rogus
                                                          Senior Vice President

                                      TENANT:

                                      POCKETSCRIPT, INC.,
                                      an Ohio corporation

                                      By:   /s/ Ronald A. Woessner
                                         ---------------------------------------

                                      Printed:  Ronald A. Woessner
                                              ----------------------------------

                                      Title:  V.P.
                                            ------------------------------------

                                      -16-

<PAGE>

STATE OF OHIO               )
                            ) SS:
COUNTY OF HAMILTON          )

         Before me, a Notary Public in and for said County and State, personally
appeared Kevin T. Rogus, by me known and by me known to be the Senior Vice
President of Duke Realty Corporation, an Indiana corporation, the general
partner of Duke Realty Limited Partnership, a general partner of Duke Realty
Ohio, an Indiana general partnership, who acknowledged the execution of the
foregoing "Lease" on behalf of said partnership.

         WITNESS my hand and Notarial Seal this 9 day of March, 2004.

                                      /s/ Naomi Gump
                                      -----------------------------------------
                                      Notary Public

                                      __________________________________________
                                      (Printed Signature)

My Commission Expires: _______________________

My County of Residence: ______________________


STATE OF Texas______________________)
                                    ) SS:

COUNTY OF Dallas ___________________)

         Before me, a Notary Public in and for said County and State, personally
appeared Ronald A. Woessner , by me known and by me known to be the Vice
President of PocketScript, Inc., an Ohio corporation, who acknowledged the
execution of the foregoing "Lease" on behalf of said corporation.

         WITNESS my hand and Notarial Seal this 1st day of March, 2004.

                                      /s/ Darleen Harris
                                      ----------------------------------
                                      Notary Public

                                      Darleen Harris
                                      ----------------------------------
                                      (Printed Signature)

My Commission Expires: 5-15-05

My County of Residence: Collin

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