<PAGE>


                                                                   Exhibit 10.10
                                                                   -------------

Execution Copy

                     DSS SERVER SOFTWARE LICENSE AGREEMENT


     This DSS Server Software License Agreement (the "Agreement") is made as of
July 31, 1998 ("Effective Date") by and between Engage Technologies, Inc.
("Engage"), a Delaware corporation with its principal office located at 100
Brickstone Square, Andover, Massachusetts 01810, including its parent company
CMG Information Services, Inc. ("CMGI") and CMGI's majority-owned subsidiaries
(individually, or collectively with Engage and CMGI, "CMGI") and Red Brick
Systems, Inc., a Delaware corporation, with its principal office located at 485
Alberto Way, Los Gatos, California 95032 ("Red Brick").

The following Exhibits are made a part of this Agreement:

Exhibit 1:  Defined Terms
Exhibit 2:  End User Terms
Exhibit 3:  List of Products to Which Warehouse DSS Server Software Will Port
            and/or Interface

     In consideration of the covenants, representations and warranties set forth
herein and other good and valuable consideration, the parties agree as follows:

     ARTICLE 1: OPERATING PROVISIONS FOR LICENSED ACTIVITIES

1.1  Development of DSS Server Software for Database Technology.
     ----------------------------------------------------------

     CMGI will use commercially reasonable efforts to develop and deliver to Red
Brick a commercially complete and salable version of the Current DSS Server
Software (as defined in the Amended and Restated Mutual Reseller and Alliance
Agreement between the parties, dated the date hereof) porting to or interfacing
with the Red Brick products and applications set forth on Exhibit 3 attached
hereto (the "Warehouse DSS Server Software"). CMGI will use commercially
reasonable efforts to develop and deliver the Warehouse DSS Server Software for
incorporation into the Database Technology by October 15, 1998.

                                       1
<PAGE>

1.2  Development Assistance for the Warehouse DSS Server Software.
     ------------------------------------------------------------

     Commencing upon the Effective Date of this Agreement, Red Brick shall
provide CMGI, at no charge, with development assistance related to the
development and delivery by CMGI of the Warehouse DSS Server Software. Such
development assistance shall include all reasonable assistance necessary to
assist CMGI in the development and delivery by CMGI of the Warehouse DSS Server
Software, including, without limitation, telephone access to a named Red Brick
engineer for support, provision of all Red Brick Warehouse and Red Brick
Formation database connectors to the Red Brick Warehouse and Red Brick Formation
software and weekly meetings between CMGI and Red Brick personnel, to the extent
necessary, to resolve any outstanding issues.

1.3  Delivery of Warehouse DSS Server Software for Database Technology.
     -----------------------------------------------------------------

     Upon completion of the development of the Warehouse DSS Server Software,
CMGI shall provide Red Brick at no cost with one (1) master media containing the
Warehouse DSS Server Software in object code form and one (1) master copy of
each item of all documentation for the Warehouse DSS Server Software to the
extent such documentation is then available (together the "Warehouse DSS Server
Software Licensed Materials").

1.4  Acceptance of Warehouse DSS Server Software.
     -------------------------------------------

     Red Brick shall, within 60 days following Red Brick's receipt of the
Warehouse DSS Server Software, conduct acceptance testing to ensure that: (i)
the Warehouse DSS Server Software functions in accordance with the
specifications for the Warehouse DSS Server Software contained in the user
documentation provided to Red Brick by CMGI with the Warehouse DSS Server
Software and (ii) the Warehouse DSS Server Software ports to or interfaces with
the Red Brick products and applications set forth on Exhibit 3 attached hereto
such that the Warehouse DSS Server Software is at least as functional as the
standard DSS Server Software produced by CMGI which interfaces with other
commercially available databases.

     Within such sixty (60) day testing period Red Brick will give CMGI notice
as soon as reasonably possible concerning any potential issues or problems with
the Warehouse DSS Server Software or potential reasons for not accepting such
Warehouse DSS Server Software, such notice to be given in no events less than
three (3) business days after Red Brick becomes aware of any such potential
issues or problems. Any notice of non-acceptance or of potential problems or
issues which may result in non-acceptance

                                       2
<PAGE>


of the Warehouse DSS Server Software shall describe the failure, or potential
failure, of the Warehouse DSS Server Software in reasonable detail. If Red Brick
gives CMGI written notice of non-acceptance, or reasons for potential non-
acceptance, within such sixty (60) day testing period, CMGI shall promptly
investigate the failure or potential failure. Red Brick shall provide to CMGI,
to the extent reasonably available at the time, detailed documentation and
explanation, together with underlying data, to substantiate the failure or
potential failure and to assist CMGI in its efforts to diagnose and correct the
failure or potential failure. If CMGI determines, reasonably and in good faith,
that there was no failure or that such failure was not caused by an error in the
Warehouse DSS Server Software, then CMGI shall give prompt written notice to Red
Brick explaining that determination in reasonable detail and unless, within five
(5) days after receiving such notice, Red Brick gives written notice to CMGI
that it disputes that determination, Red Brick shall be deemed to have accepted
the Warehouse DSS Server Software.

     If CMGI determines that there was a failure which was caused by a defect in
the Warehouse DSS Server Software, then CMGI shall use commercially reasonable
efforts to correct the failure as soon as reasonably practicable. If CMGI
corrects such failure, then CMGI shall give written notice to Red Brick
certifying that such failure has been corrected, and another acceptance period
shall begin, provided that such additional acceptance period shall last for
fifteen (15) days.

1.5  License Grant to the Warehouse DSS Server Software.
     --------------------------------------------------

     Subject to the terms and conditions of this Agreement CMGI hereby grants to
Red Brick and Red Brick hereby accepts a non-transferable (except as provided
herein), limited license for the term of this Agreement to exercise all rights
whatsoever as provided below solely with respect to the Warehouse DSS Server
Software Licensed Materials in all parts of the world (the "License"):

     1.5.1  to use, copy and modify the Warehouse DSS Server Software Licensed
Materials solely for the purpose of incorporating the Warehouse DSS Server
Software Licensed Materials into the Database Technology;

     1.5.2  to incorporate portions of the Warehouse DSS Server Software
Licensed Materials into the Database Technology provided that users of the
Database Technology cannot gain access to the source code for the Warehouse DSS
Server Software Licensed Materials;

                                       3
<PAGE>

     1.5.3  to, either directly or through Resellers (as defined below): (i)
market, distribute, copy and license (with the right to sublicense) the
Warehouse DSS Server Software Licensed Materials in object code form only, only
as incorporated in the Database Technology; (ii) demonstrate the Warehouse DSS
Server Software Licensed Materials only as incorporated in the Database
Technology to prospective customers; (iii) internally use the Warehouse DSS
Server Software Licensed Materials to provide technical support to end user
customers or prospective customers; and (iv) license the Warehouse DSS Server
Software Licensed Materials only as incorporated in the Database Technology to
end users for use on a trial basis only pursuant to a trial license agreement
containing all terms set forth in Exhibit 2; and

     1.5.4  when the Warehouse DSS Server Software Licensed Materials are
delivered by Red Brick as part of the Application Suite, in Red Brick's capacity
as a Reseller of the Application Suite, Red Brick will have the rights to market
and distribute the Warehouse DSS Server Software Licensed Materials as part of
the Application Suite which are set forth in the Amended and Restated Mutual
Reseller and Alliance Agreement between the parties, dated the date hereof (the
"Reseller Agreement").

1.6  License Restrictions to the Current and Warehouse DSS Server Software.
     ---------------------------------------------------------------------

     Notwithstanding anything else in this Agreement, this Agreement and the
Reseller Agreement do not include a grant to Red Brick of any ownership right,
title or other interest, in any of CMGI's Rights (as defined in Section 4.1)
relating to the Current DSS Server Software Licensed Materials, the Warehouse
DSS Server Software Licensed Materials or any DSS Updates nor in any copy or
part thereof. In particular, and without limitation, Red Brick shall not, and
will not allow any third party to (i) reverse engineer or attempt to discover
any source code or underlying algorithms of the Current DSS Server Software
Licensed Materials, the Warehouse DSS Server Software Licensed Materials or any
DSS Updates, (ii) delete or fail to reproduce any copyright or other proprietary
notices appearing in the Current DSS Server Software Licensed Materials, the
Warehouse DSS Server Software Licensed Materials or any DSS Updates, (iii)
sublicense or otherwise distribute the Current DSS Server Software Licensed
Materials, Warehouse DSS Server Software Licensed Materials or any DSS Updates
in source code form, (iv) sublicense or otherwise distribute the Warehouse DSS
Server Software Licensed Materials or any DSS Updates in object code form except
when incorporated into the Database Technology or as part of the Application
Suite or (v) sublicense or otherwise distribute the Current DSS Server Software
Licensed Materials in object code form except as part of the Application Suite.
Red Brick has no right to sublicense or otherwise distribute the Current DSS
Server Software except purely as a Reseller of the Application Suite in the
event that the Current DSS Server Software is part of the Application Suite.

1.7  Red Brick Resellers.
     -------------------

                                       4
<PAGE>

     Subject to the terms and conditions of this Agreement, Red Brick may
appoint authorized resellers ("Resellers") to use and distribute the Warehouse
DSS Server Software Licensed Materials and DSS Updates (only as incorporated in
the Database Technology) only as provided in Section 1.5 provided that each such
Reseller shall be bound by written agreement with Red Brick that (a) protects
the confidentiality of; and CMGI's rights in, the Warehouse DSS Server Software
Licensed Materials and DSS Updates to the same extent as provided under this
Agreement, and prevents the Reseller from disassembling, decompiling or
otherwise reverse engineering the Warehouse DSS Server Software Licensed
Materials and DSS Updates or otherwise attempting to learn source code,
structure, or algorithms underlying the Warehouse DSS Server Software Licensed
Materials and DSS Updates (except to the extent that such prohibitions are
limited by law in certain jurisdictions, in which case the affected prohibitions
shall be included in such jurisdictions in as restrictive and protective a form
as they are allowed, with unaffected prohibitions remaining unchanged); and (b)
limits the liability of CMGI to the same extent as provided under the terms of
this Agreement. Each such Reseller shall enter into a restricted use license
agreement with Red Brick that contains terms at least as restrictive in all
respects as the required terms set forth for "Distributors" on Exhibit D to the
Amended and Restated Mutual Reseller and Alliance Agreement between the parties,
dated the date hereof. Red Brick shall remain directly liable to CMGI and shall
indemnify, defend and hold harmless CMGI for any breach by any of Red Brick's
Resellers of such agreement.

1.8  End User Licenses.
     -----------------

     Prior to or upon delivery of the Database Technology containing a copy of
the Warehouse DSS Server Software Licensed Materials or DSS Updates to an end
user, Red Brick and its Resellers shall enter into a written binding license
agreement with the end user which shall contain terms at least as restrictive as
those set forth on Exhibit 2 ("End User License Agreement").  Red Brick shall
provide CMGI with copies of such End-User License Agreements upon request.

1.9  Delivered Copy of Warehouse DSS Server Software to be Disabled.
     --------------------------------------------------------------

     Every copy of the Warehouse DSS Server Software Licensed Materials or DSS
Updates which is incorporated into the Database Technology and delivered by Red
Brick or its Resellers shall employ a license key mechanism or otherwise be
disabled in a manner so as to prohibit use of the Warehouse DSS Server Software
Licensed Materials or DSS Updates until the end user obtains an appropriate code
or enabling software components from either Red Brick or CMGI, the obtaining of
such code or enabling software components from either Red Brick or CMGI and
their use to activate the Warehouse DSS Server Software Licensed Materials or
DSS Updates

                                       5
<PAGE>

otherwise referred to as the Warehouse DSS Server Software Licensed Materials or
DSS Updates being activated.

                              ARTICLE 2: UPDATES

2.1  Updates to the Warehouse DSS Server Software.
     --------------------------------------------

     (a) For the term of this Agreement, CMGI shall provide Red Brick with one
(1) master media containing all DSS Updates in object code form and one (1)
master copy of each item of all documentation for the DSS Updates to the extent
such documentation is then available.

     (b) CMGI will develop and deliver to Red Brick DSS Updates to ensure that
the Warehouse DSS Server Software Licensed Materials delivered and licensed to
Red Brick track the most recent version of the DSS Server Software Licensed
Materials being marketed by CMGI.

     (c) CMGI will develop and deliver to Red Brick DSS Updates to ensure that
the Warehouse DSS Server Software Licensed Materials port to, or interface with,
the most recent versions of the Red Brick products and applications set forth on
Exhibit 3 attached hereto. To facilitate CMGI's development of such DSS Updates,
Red Brick will inform CMGI at least ninety (90) days in advance of Red Brick's
release of any updates to, or more recent versions of; any of such products and
applications. In addition, whenever Red Brick updates or releases a new version
of any of the products or applications set forth on Exhibit 3, Red Brick shall
deliver to CMGI one (1) master media containing all such updates or new versions
in object code form and one (1) master copy of each item of all documentation
available for such updates or new versions to the extent such documentation is
then available. CMGI will develop and provide to Red Brick DSS Updates to port
to, or interface with, such updated or new versions of the Red Brick products
and applications within ninety (90) days of CMGI's receipt of the master media
and documentation for the updated or new versions of such products and
applications.

     (d) Red Brick will have the license rights to all DSS Updates which are set
forth in Section 1.5 of this Agreement for the Warehouse DSS Server Software
Licensed Materials and Red Brick will be subject to all restrictions for use of
the DSS Updates which are applicable to the Warehouse DSS Server Software
Licensed Materials.

                      ARTICLE 3: LICENSE FEES AND SUPPORT

3.1  Obligation to Pay Royalty Fees.  For every sale of Database Technology
     ------------------------------
which incorporates a version of the Warehouse DSS Server Software Licensed
Materials or any DSS Updates and for which the recipient of such Database
Technology elects to

                                       6
<PAGE>

activate the Warehouse DSS Server Software Licensed Materials and DSS Updates,
Red Brick will pay to CMGI, or to any party which CMGI designates in writing to
Red Brick, an amount equal to the then current CMGI list price for such
Warehouse DSS Server Software Licensed Materials or DSS Updates, less the
discount set forth below (the "Royalty Fees"):

     3.1.1  For the period beginning on the Effective Date of this Agreement and
ending on the one year anniversary of the Effective Date of this Agreement,
fifty percent (50%), subject to the exception set forth below.

     3.1.2  For the period beginning on the day after the one year anniversary
of the Effective Date of this Agreement and lasting through the expiration or
termination of this Agreement, forty percent (40%), subject to the exception set
forth below.

     3.1.3  In the event that CMGI establishes a joint venture or exclusive
distributor in a geographic area and such joint venture or exclusive distributor
becomes the source of the Warehouse DSS Server Software Licensed Materials and
DSS Updates for Red Brick pursuant to Section 9.12 of this Agreement, such joint
venture or exclusive distributor will offer a discount off of current list price
of at least thirty percent (30%), with a higher discount potentially being
available at the agreement of such joint venture or exclusive distributor.

     Red Brick shall independently determine the prices at which to sell the
Database Technology (including the Warehouse DSS Server Software Licensed
Materials and DSS Updates incorporated therein) to its End Users or to
Resellers; provided, however, that to the extent Red Brick offers an End User a
discount, such discount shall be equitably distributed between Red Brick's own
products that End User or Reseller is purchasing and the Database Technology
(including the Warehouse DSS Server Software Licensed Materials and DSS Updates
incorporated therein) being resold.

     CMGI may designate any person or entity as the recipient of all or any
portion of the Royalty Fees, such persons or entities to potentially include,
without limitation, any joint ventures or subsidiary companies of CMGI.

3.2  Pre-paid Royalties.
     ------------------

     (a)    Red Brick shall make the following guaranteed, non-refundable
minimum royalty payments (the "Prepaid Royalty Fees") to CMGI:

                                       7
<PAGE>


          (i)   on the later of (a) the date of acceptance of the Warehouse DSS
Server Software Licensed Materials pursuant to Section 1.4 of this Agreement or
(b) October 15, 1998 (the "First Payment Date"), Red Brick will pay to CMGI an
additional $0;

          (ii)  on March 31, 1999, Red Brick will pay to CMGI an additional
                $200,000;

          (iii) on June 30, 1999, Red Brick will pay to CMGI an additional
                $300,000;

          (iv)  on July 31, 1999, Red Brick will pay to CMGI an additional
                $300,000;

          (v)   on each of the twelve, fifteen, eighteen and twenty-one month
anniversaries of the First Payment Date, Red Brick will pay to CMGI an
additional $200,000 (for a total payment of $1,600,000 under this Section 3.2(a)
by the twenty-one month anniversary of the First Payment Date; and

          (vi)  in the event of a termination of this Agreement Red Brick will
remain liable to CMGI, despite such termination, for payment of all of the
Prepaid Royalty Fees set forth in this Section 3.2(a), including those payments
designated to be paid on dates after the date of such termination.

     (b)  Each payment made pursuant to subsections 3.2(a)(ii)-(iv) is a minimum
royalty for the period commencing the day after the prior payment and ending as
of the day designated for the current payment; provided, however, that each such
payment shall be reduced by the amount paid by Red Brick to Engage during each
such period in respect of Royalty Fees due pursuant to Section 3.1 of this
Agreement, as well as any fees due under Section 7(a) of the Reseller Agreement
between the parties, dated the date hereof (together the "Combined Fees") for
such period.

     Each payment made pursuant to subsection 3.2(a)(v) is a prepaid royalty and
will be credited toward any Combined Fees for the three-month period following
the date of each such payment at the end of each three-month period, on the day
immediately preceding the day designated for the next payment pursuant to
Section 3.2(a)(v) above, the Prepaid Royalty Fees which have not been used will
expire and be forfeited, such that every three-month payment may only be
credited toward Combined Royalty Fees which accrue in the period beginning on
such payment and ending on the day immediately preceding the next scheduled
payment. Notwithstanding the foregoing, the payment on the twelve month
anniversary of the First Payment Date shall also be credited toward Combined
Fees for the period commencing August 1, 1999 and ending on the twelve month
anniversary of the First Payment Date.

                                       8
<PAGE>

3.3  Royalty Fee Reports.  Each quarter during the term of this Agreement when
     -------------------
Red Brick has an obligation to pay Royalty Fees or Prepaid Royalty Fees, within
fifteen (15) days after the end of the quarter, Red Brick shall submit a report
to CMGI describing any Royalty Fee payments made or due; number of copies of the
Database Technology shipped for which the licensee has accepted and activated a
license to the Warehouse DSS Server Software Licensed Materials or DSS Updates;
the shipment date; and the end user name, address, hardware, and operating
system; as well as any information necessary or useful for calculating/verifying
all Royalty Fees due. Red Brick shall also provide, in the reports described
above, the shipment date; and the end user name, address, hardware, and
operating system for any trial licenses which Red Brick grants. Any Royalty Fee
amounts due based on Red Brick activity or revenue in such quarter will be paid
at the same time.

3.4  Payment Terms and Compliance.  Except as set forth below, all payments of
     ----------------------------
Royalty Fees and Prepaid Royalty Fees (together the "Fees") shall be made inside
the U.S., in U.S. dollars net thirty (30) days from receipt of invoice;
provided, however, Royalty Fees shall be due and payable upon submission of each
quarterly Report as required pursuant to Section 3.3 and provided further that
in the event that CMGI designates another person or entity as the recipient of
all or any portion of the Royalty Fees, pursuant Section 3.1, then if such
person or entity desires it may receive payment outside the U.S. in the country
and currency of its choice. Any payments more than thirty (30) days overdue will
bear a late payment fee of 1.5% per month, or, if lower, the maximum rate
allowed by law. Red Brick shall at all times keep and maintain complete and
accurate records that include at least the following information: name and
address of each end user who has activated a copy of the Warehouse DSS Server
Software Licensed Materials or DSS Updates, number of copies licensed and date
of purchase. CMGI may, with no less than five (5) business days' notice, and at
CMGI's expense, have an independent auditor or accountant audit, during normal
business hours, Red Brick's records related to the Warehouse DSS Server Software
Licensed Materials and any DSS Updates to verify Red Brick's compliance with the
provisions of this Agreement. If an audit indicates an underpayment of five
percent (5%) or more of any amounts due hereunder, Red Brick shall promptly pay
the deficiency and reimburse CMGI for the cost of the audit.

3.5  Support.
     -------

     3.5.1 Separate Support Agreement.  Within thirty (30) days after the
           --------------------------
Effective Date of this Agreement, the parties will execute a separate support
agreement ("Support Agreement") under the terms of which CMGI shall provide Red
Brick with such technical support services for the Warehouse DSS Server Software
Licensed

                                       9
<PAGE>

Materials and DSS Updates as the parties mutually agree at a price mutually
agreed to by the parties for an initial period of two (2) years from the
execution date of such support agreement. In the Support Agreement the parties
will also mutually agree upon the terms and responsibilities between the parties
for all installation, training and consultation, and all other maintenance and
support directly to end users with respect to the Warehouse DSS Server Software
Licensed Materials and DSS Updates incorporated into the Database Technology.

               ARTICLE 4: INTELLECTUAL PROPERTY; CONFIDENTIALITY

4.1  CMGI Ownership.
     --------------

     CMGI shall have all right, title and interest (including all patent rights,
copyrights, trade secret rights, and other intellectual property or proprietary
rights throughout the world (collectively referred to as "CMGI's Rights")) in
and to (a) its Confidential Information and (b) the Current DSS Server Software
Licensed Materials, Warehouse DSS Server Software Licensed Materials and any DSS
Updates.

4.2  Red Brick Ownership.
     -------------------

     Red Brick shall have all right, title and interest (including all patent
rights, copyrights, trade secret rights, and other intellectual property or
proprietary rights throughout the world (collectively referred to as "Red
Brick's Rights")) in and to its Confidential Information.

4.3  No Other Rights or Licenses.
     ---------------------------

     Except as expressly provided in this Agreement, neither party is granted
any right or license to any of the foregoing or to any rights of the other.

4.4  Confidential Information.
     ------------------------

     The parties acknowledge and agree that during the course of performing
their duties under this Agreement, the parties may exchange confidential and
proprietary information ("Confidential Information"). Confidential Information
shall include, without limitation, customer lists, the Current DSS Server
Software Licensed Materials, the Warehouse DSS Server Software Licensed
Materials, DSS Updates, trade secrets, product plans and schedules, new product
information, technical data and know-how, instructional and operating manuals,
financial information, marketing and sales data and plans, and any other
business, financial or technical information.

                                       10
<PAGE>

Each party acknowledges that the Confidential Information of the other party
constitutes valuable trade secrets of that party. Both parties agree that this
Agreement establishes a confidential relationship between CMGI and Red Brick as
to the other party's Confidential Information. Each party agrees, therefore, to
preserve the confidential nature of the other party's Confidential Information
by retaining and using such Confidential Information in trust and confidence,
solely in accordance with their rights under this Agreement, and further agrees
not to (except as may be otherwise permitted under this Agreement) (i) use the
Confidential Information; (ii) disclose the Confidential Information to any
third parties; (iii) permit the use of such Confidential Information by, or
disclosure of such Confidential Information to unauthorized persons. Each party
agrees to promptly report to the other party any violations of these provisions
by its employees, consultants, or agents of which they are aware. Except as
otherwise permitted under this Agreement, neither party shall copy or make, or
cause or permit any third party to copy such Confidential Information, in whole
or in part, without the prior written consent of the other party. A party
receiving Confidential Information shall not be obligated under this Section 4.4
with respect to information the receiving party can document: (a) is or has
become readily publicly available without restriction through no fault of the
receiving party or its employees or agents; (b) is received without restriction
from a third party lawfully in possession of such information and lawfully
empowered to disclose such information; (c) was rightfully in possession of the
receiving party without restriction prior to its disclosure by the other party;
or (d) was independently developed by the receiving party by employees without
violation of this Section 4.4.

                  ARTICLE 5: WARRANTIES; LIABILITY LIMITATION

5.1  Warranties.
     ----------

     As is set forth in Section 4.1 of the Amended and Restated Software License
Agreement between the parties, dated the date hereof, at such future time as Red
Brick makes generally available its first release of Red Brick Formation, Red
Brick will make all representations and warranties to CMGI concerning such
release, and all Licensed Software and Updates thereto (as such terms are
defined in such Amended and Restated Software License Agreement) provided
subsequent to the date of such release, that Red Brick makes to end users
concerning such licensed materials under its standard software license
agreement. At that time CMGI will make reciprocal warranties to Red Brick
concerning the Warehouse DSS Server Software Licensed Materials and DSS Updates.

     EXCEPT AS OTHERWISE SET FORTH IN THIS AGREEMENT, THE CURRENT DSS SERVER
SOFTWARE LICENSED MATERIALS, WAREHOUSE DSS SERVER SOFTWARE LICENSED MATERIALS
AND DSS UPDATES ARE PROVIDED "AS IS." EXCEPT AS OTHERWISE SET FORTH IN THIS
AGREEMENT, CMGI MAKES NO WARRANTIES TO ANY PERSON WITH RESPECT TO THE

                                       11
<PAGE>


CURRENT DSS SERVER SOFTWARE LICENSED MATERIALS, WAREHOUSE DSS SERVER SOFTWARE
LICENSED MATERIALS AND DSS UPDATES OR ANY SERVICES PROVIDED HEREUNDER, AND
DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

5.2  Limitation of Liability.
     -----------------------

     IN NO EVENT SHALL ANY PARTY UNDER THIS AGREEMENT BE LIABLE WITH RESPECT TO
ANY SUBJECT MATTER OF THIS AGREEMENT UNDER ANY CONTRACT, NEGLIGENCE (EXCLUDING
WILLFUL MISCONDUCT), STRICT LIABILITY OR OTHER LEGAL OR EQUITABLE THEORY FOR (I)
ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA OR COST OF
PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES OR (II) FOR ANY AMOUNT
IN EXCESS OF $10,000, EXCLUDING, HOWEVER, LIABILITY FOR BREACH OF SECTION 4.4 OR
CMGI'S DUTY OF INDEMNIFICATION PURSUANT TO SECTION 6.1.

                          ARTICLE 6: INDEMNIFICATION

6.1  CMGI Duty of Indemnification.
     ----------------------------

     CMGI shall hold Red Brick, its directors, officers, employees and agents
harmless from, and indemnify them against, all demands, costs, damages,
expenses, including reasonable attorneys' fees, and liabilities for any claim or
suit ("Claim") brought against Red Brick by a third patty alleging that the use
or distribution of the Warehouse DSS Server Software Licensed Materials or DSS
Updates by Red Brick, its directors, officers, employees or agents hereunder
infringes upon any United States patent, trademark, copyright, or trade secret;
provided that Red Brick (i) gives CMGI prompt written notice of the Claim and
(ii) gives CMGI all necessary information, reasonable assistance and sole
authority to defend and/or settle the Claim. In the event that the use or
distribution of the Warehouse DSS Server Software Licensed Materials or DSS
Updates as permitted hereunder is held to constitute an infringement, CMGI
shall, at its option and sole expense, (a) modify or replace the Warehouse DSS
Server Software Licensed Materials or DSS Updates so that they perform
comparable functions without material degradation in efficiency and without
infringement; or (b) obtain a royalty-free license for Red Brick to use the
infringing portion of the Warehouse DSS Server Software Licensed Materials and
DSS Updates. CMGI shall have no liability for any Claim or infringement to the
extent the same is

                                       12
<PAGE>

based on (x) use or combination of the Warehouse DSS Server Software Licensed
Materials or DSS Updates with equipment, devices, software, data or equipment
not supplied by CMGI; (y) the Warehouse DSS Server Software Licensed Materials
or DSS Updates having been modified by Red Brick or; (z) use of the Warehouse
DSS Server Software Licensed Materials or DSS Updates in a manner for which they
were not designed.

6.2  Red Brick Duty of Indemnification.
     ---------------------------------

     Red Brick agrees to enforce and to use its best efforts to cause its
authorized Resellers to enforce the terms of the End User License Agreements
granted in accordance with the terms of this Agreement and to inform CMGI of any
breach of such terms. Red Brick will defend and indemnify CMGI against all
damages, payments, costs and expenses (including attorney's fees) for all claims
or alleged claims (i) related to any use by Red Brick, its Resellers, or end
users of the Current DSS Server Software Licensed Materials, Warehouse DSS
Server Software Licensed Materials, or DSS Updates; or (ii) related to the
failure by Red Brick or its Resellers to include in any End User License
Agreement granted hereunder the required contractual terms as set forth in
Exhibit 2.

                        ARTICLE 7: TERM AND TERMINATION

7.1  Term and Termination.  The term of this Agreement shall last for five (5)
     --------------------
years, commencing as of the Effective Date, unless earlier terminated as
provided below. At the end of such initial term, and of all subsequent renewal
terms thereof, this agreement shall renew at the sole option of CMGI for
successive one-year terms. CMGI will exercise its sole option to renew by
informing Red Brick of its intent to renew in writing at least thirty-days prior
to the end of the initial, or any renewal, term. This Agreement may be
terminated by either party in the event of a material breach by the other party
of any warranty, covenant, or other provision which is not cured within thirty
(30) days of notice. In addition, CMGI may terminate this Agreement in the event
of a termination or expiration of the Amended and Restated Mutual Reseller and
Alliance Agreement between the parties, dated the date hereof (the "Reseller
Agreement"). In the event of a termination of this Agreement by one party for
breach by the other patty, the breaching party will lose all license and other
rights provided by this Agreement.

7.2  Survival.
     --------

     The following Articles and Sections shall survive any termination of this
Agreement: Sections 1.6 and 1.8, Sections 3.1 through 3.4, Article 4 in its
entirety and Sections 5.2, 6.1,6.2 and Articles 7 and 9 in their entirety.

                                       13
<PAGE>

     In the event that this Agreement is terminated for any reason, the rights
of the End Users to whom Red Brick may have distributed Warehouse DSS Server
Software Licensed Materials or DSS Updates pursuant to this Agreement will be
unaffected by such termination. Within thirty (30) days after the effective date
of the termination of this Agreement, Red Brick shall deliver to CMGI complete
and accurate copies of all executed End User license agreements that survive
termination of this Agreement that are held in Red Brick's possession. In order
to maintain their rights End Users must continue to abide by the terms of their
End User agreements.

                            ARTICLE 8: CONTRACTORS

8.1  Red Brick's Use of Contractors.
     ------------------------------

     Notwithstanding any other provision of this Agreement, Red Brick's
contractors shall have the same right to use the Warehouse DSS Server Software
Licensed Materials and DSS Updates as afforded to Red Brick and its employees
hereunder, provided that (i) Red Brick shall ensure that its contractors comply
with the terms of this Agreement, (ii) Red Brick shall remain liable to CMGI for
the actions of its contractors, and (iii) the contractors shall enter into a
confidentiality agreement with Red Brick containing terms substantially similar
to those set forth in Section 4.4.

                    ARTICLE 9: GENERAL TERMS AND CONDITIONS

9.1  Equitable Relief.
     ----------------

     Each patty acknowledges that any breach of its obligations with respect to
the rights of the other party will cause the other party irreparable injury for
which there are inadequate remedies at law and that the other party shall be
entitled to equitable relief in addition to all other remedies available to it;
provided, however, that in no event will such equitable relief affect in any
respect the rights and obligations of the parties under Sections 1.6, 1.7, 1.8,
1.9, 3.1 through 3.4 and Articles 4 and 5 hereof.

9.2  Relationships between Parties.
     -----------------------------

     In all matters relating to this Agreement, Red Brick and CMGI will act as
independent contractors. The relationship between Red Brick and CMGI is that of
licensee/licensor. Neither party will represent that it has any authority to
assume or create any obligation, express or implied, on behalf of the other
party, nor to represent the other party as agent, employee, franchise, or in any
other capacity. Except as provided herein and in the agreements referenced in
Section 9.9, nothing in this Agreement shall be construed to limit either
party's right to independently develop or distribute software which is
functionally similar to the other party's product, so long as proprietary
information and Confidential Information of the other party is not used in such
development.

                                       14
<PAGE>

9.3  Assignment.
     ----------

     Neither party may assign this Agreement, or any rights or obligations
hereunder, without the prior written consent of the other party, which consent
shall not be unreasonably withheld, provided that either party may assign this
Agreement to an affiliate, to its successor in connection with a merger,
acquisition or consolidation or to any acquirer in connection with the sale of
all or substantially all of such party's assets, including, without limitation,
the sale, merger or acquisition of Red Brick or CMGI. Subject to the limitations
above, this Agreement will mutually benefit and be binding upon the parties,
their successors and assigns. In the event of any assignment of this Agreement
by any party hereto, or the merger, acquisition or consolidation of any party
hereto, or the sale of all of such party's assets, such party hereby agrees that
any such assignee, acquirer or purchaser shall execute an agreement of
assumption satisfactory to the other party in all respects, whereby such
assignee, acquirer or purchaser agrees to be bound by all of the obligations and
covenants of such party hereunder in all respects.

     In the event of a sale of all or substantially all of:

     (a) CMGI's assets, including, without limitation, the sale, merger or
acquisition of CMG or Engage, with, into or to a Red Brick Competitor, then Red
Brick may terminate this Agreement and the licenses and rights granted pursuant
hereto.

     (b) Red Brick's assets, including, without limitation, the sale, merger or
acquisition of Red Brick, with, into or to an Engage Competitor, then CMGI may
terminate this Agreement and the licenses and rights granted pursuant hereto,

     (c) The respective obligations and covenants of each party hereto shall be
binding upon each party and its respective Affiliates, being those persons or
legal entities controlling, controlled by or under common control with such
parties.

9.4  Notices.
     -------

     All notices, including notices of address change, required to be sent
hereunder shall be in writing and shall be deemed to have been given when mailed
by first class mail to the address set forth under the signature blocks at the
end of this Agreement, Attention:  Legal/Contracts Department.

9.5  Governing Law/Jurisdiction.
     --------------------------

     This Agreement shall be governed by and construed in accordance with the
laws of the Commonwealth of Massachusetts, without regard to any applicable

                                       15
<PAGE>

conflicts of laws. CMGI and Red Brick each agree that all disputes arising among
them related to this Agreement, whether arising in contract, tort, equity or
otherwise, shall be resolved only and exclusively in either the United States
Federal Court in Boston, Massachusetts, or in a Massachusetts state court
located in Essex County, Massachusetts. Red Brick hereby consents to the
jurisdiction of the United States Federal Court in Boston, Massachusetts, and of
the Massachusetts state courts in Essex County, Massachusetts, with respect to
any action, suit or proceeding commenced in any such court by CMGI or by their
successors or assigns, and Red Brick waives any defense it may have with respect
to such jurisdiction or with respect to the proper venue of any such action,
suit or proceeding in any such court.

9.6  Severability.
     ------------

     In the event any provision of the Agreement is held to be invalid or
unenforceable, the remaining provisions of this Agreement will remain in full
force and effect.

9.7  Export.
     ------

     Red Brick and its Resellers agree to comply fully with all relevant export
laws and regulations of the United States to assure that neither the Current DSS
Server Software Licensed Materials, Warehouse DSS Server Software Licensed
Materials and DSS Updates, nor any direct product thereof, are exported,
directly or indirectly, in violation of United States law.

9.8  Waiver.
     ------

     The waiver by either party of any default or breach of this Agreement shall
not constitute a waiver of any other or subsequent default or breach.

9.9  Entire Agreement.
     ----------------

     This Agreement together with the Amended and Restated Mutual Reseller and
Alliance Agreement, dated the date hereof, the Consulting Services Agreement,
dated August 29, 1997, the Technology Purchase Agreement, dated August 29, 1997
and the Amended and Restated License Agreement, dated the date hereof,
constitute the complete agreement between the parties and supersede all prior or
contemporaneous agreements or representation, written or oral, concerning the
subject matter of this Agreement. This Agreement may not be modified or amended
except in a writing signed by a duly authorized representative of each party; no
other act, document, usage or customer shall be deemed to amend or modify this
Agreement. All terms and conditions of any Red Brick purchases order or other
ordering document shall be superseded by the terms and conditions or this
Agreement.

                                       16
<PAGE>

9.10  Construction.
      ------------

      The Parties have participated jointly in the negotiation and drafting of
this Agreement. In the event an ambiguity or question of intent or
interpretation arises, this Agreement shall be construed as if drafted jointly
by the Parties and no presumption or burden of proof shall arise favoring or
disfavoring any Party by virtue of the authorship of any of the provisions of
this Agreement.

9.11  Counterparts.
      ------------

      This Agreement may be executed in any number of counterparts, each of
which shall be an original and all of which shall constitute together but one
and the same document.

9.12  Future CMGI Joint Ventures and Distributors.
      -------------------------------------------

      In the future event that CMGI establishes a joint venture or designates
any other person or entity as an exclusive distributor of the Current DSS Server
Software Licensed Materials, Warehouse DSS Server Software Licensed Materials or
DSS Updates in any geographic area, then at the sole election of CMGI, Red Brick
will enter into a relationship with such joint venture or distributor providing
that Red Brick will operate as a subdistributor of such joint venture or other
distributor in the designated geographic area and Red Brick will, as a
subdistributor, obtain all training in the designated geographic area from such
joint venture or distributor, will receive all Current DSS Server Software
Licensed Materials, Warehouse DSS Server Software Licensed Materials and DSS
Updates in such area from such joint venture or distributor and will make all
payments due for the Current DSS Server Software Licensed Materials, Warehouse
DSS Server Software Licensed Materials or DSS Updates marketed and distributed
in the designated geographic area to such joint venture or other distributor, in
the manner designated by such joint venture or distributor. Except for the terms
of payment as set forth above, the terms of the relationship between Red Brick
and such joint venture or distributor will match as closely as possible the
terms currently set forth in this Agreement between CMGI and Red Brick.

                                       17
<PAGE>

RED BRICK SYSTEMS, INC.            ENGAGE TECHNOLOGIES, INC.


By:/s/ PW Fernandez                By: /s/ Stephen A. Royal
   ---------------------------         ------------------------------------
Name: Philip W. Fernandez          Name:   Stephen A. Royal
     -------------------------          -----------------------------------
Title: EVP/COO                     Title: CFO
      ------------------------           ----------------------------------

Red Brick Systems, Inc.            Engage Technologies, Inc.
485 Alberto Way                    100 Brickstone Square
Los Gatos, CA  95032               Andover, MA 01810
Tel:  408-399-3200                 Tel:  978-684-3686
                                       ------------------------------------
Fax:  408-399-7200                 Fax:  978-684-3877
                                       ------------------------------------

                                   CMG INFORMATION SERVICES, INC.

                                   By:   /s/ Andrew J. Hajducky
                                      -------------------------------------
                                   Name:
                                        ___________________________________
                                   Title:
                                         __________________________________

                                   CMG Information Services, Inc.
                                   100 Brickstone Square
                                   Andover, MA 01810
                                   Tel:____________________________________
                                   Fax:____________________________________


                                       18
<PAGE>

                           EXHIBIT 1: DEFINED TERMS
                           ------------------------


The following terms as used in Agreement shall have the meanings set forth
below:

"Clickstream Market" means any market for any products or services primarily
designed to collect, characterize, classify, combine and analyze user or user
"agent" (i.e., a device or process that acts on a user's behalf) activity data
(including, without limitation, clickstream data) created, gathered, analyzed,
manipulated or otherwise processed through or in association with any form of
Interactive Media.

"Database Technology" means the source code and object code form of the Database
Technology acquired by Red Brick under the separate Technology Purchase
Agreement dated August 29, 1997, including end user documentation, technical
specifications and programmer notes and all Updates, enhancements, modifications
and improvements thereto, and Derivative Works thereof, but excluding code that
is part of CMGI's rights under Section 3.1(c) of the Amended and Restated
Software License Agreement between the parties, dated the date hereof.

"Derivative Works" shall have the meaning set forth in 17 U.S.C. (S) 101.

"DSS Updates" means all updates, enhancements, modifications and improvements,
including, but not limited to, preview releases, external alpha releases, beta
releases, controlled releases and general releases, to the Warehouse DSS Server
Software Licensed Materials, and Derivative Works thereof and which are
developed by CMGI or its contractors, including end user documentation,
technical specifications and programmer notes.

"Clickstream Service Bureau" means a Clickstream Service Bureau as defined in
the Amended and Restated Mutual Reseller and Alliance Agreement between the
parties, dated the date hereof.

"Engage Competitor" means a party defined as an "Engage Competitor" under the
definition contained in Exhibit A to the Amended and Restated Mutual Reseller
and Alliance Agreement between the parties, dated the date hereof.

"Fees" means Royalty Fees and Pass-Through Royalty Fees.

"Interactive Media" means communication media that allow users to input
information or participate, including, but not limited to, the Internet,
interactive television and interactive telephony.

                                       19
<PAGE>

"Red Brick Competitor" means a party defined as a "Red Brick Competitor" under
the definition contained in Exhibit A to the Amended and Restated Mutual
Reseller and Alliance Agreement between the parties, dated the date hereof.

"Red Brick Formation" means the Red Brick product currently known as Red Brick
Formation, as well as any successor products to such product.

"Red Brick Warehouse" means the Red Brick product currently known as Red Brick
Warehouse, as well as any successor products to such product.

"Updates" means all updates, enhancements, modifications and improvements,
including, but not limited to, preview releases, external alpha releases, beta
releases, controlled releases and general releases, to the technology and
software, and Derivative Works thereof, that are made commercially available and
which are not identified on the Red Brick Price List as a separate product and
which are developed by Red Brick or its contractors in source code form,
including end user documentation, technical specifications and programmer notes.

                                       20
<PAGE>

                           EXHIBIT 2: END USER TERMS


     All of Red Brick's or its Reseller's agreements with End Users licensing
the Database Technology (which Database Technology contains the Warehouse DSS
Server Software Licensed Materials or DSS Updates) shall contain terms at least
as restrictive as those set forth in this Exhibit (except to the extent that
such terms are prohibited by law in certain jurisdictions, in which case the
affected terms shall be included in such jurisdictions in as restrictive a form
as they are allowed, with all unaffected terms being unchanged):

1.   End User shall use the Database Technology (including the Warehouse DSS
     Server Software Licensed Materials and DSS Updates if incorporated into the
     Database Technology) solely in object code form for its own internal use
     and not to further distribute, license or sublicense or use for the benefit
     of a third patty in the Clickstream Market where End User receives in
     return anything of value, or otherwise convey to any other person or entity
     the Database Technology (including the Warehouse DSS Server Software
     Licensed Materials and DSS Updates if incorporated into the Database
     Technology), in whole or in part, or any rights therein. End User shall not
     use the Database Technology (including the Warehouse DSS Server Software
     Licensed Materials and DSS Updates if incorporated into the Database
     Technology) for any purpose or in any manner not expressly permitted in
     this End User license agreement. End User shall not operate a Clickstream
     Service Bureau.

2.   Prohibit transfer or duplication of the Database Technology (including the
     Warehouse DSS Server Software Licensed Materials and DSS Updates if
     incorporated into the Database Technology) except for temporary transfer in
     the event of CPU malfunction and a single backup or archival copy;

3.   Prohibit timesharing or rental of the Database Technology (including the
     Warehouse DSS Server Software Licensed Materials and DSS Updates if
     incorporated into the Database Technology) and prohibit assignment of the
     Database Technology (including the Warehouse DSS Server Software Licensed
     Materials and DSS Updates if incorporated into the Database Technology)
     unless the assignee assumes in writing all of the restrictions on the End
     User required under this Agreement;

4.   Prohibit causing or permitting the reverse engineering, disassembly or
     decompilation of the Database Technology (including the Warehouse DSS
     Server Software Licensed Materials and DSS Updates if incorporated into the
     Database Technology);

5.   Prohibit title from passing to the sublicensee or Reseller;

                                       21
<PAGE>

6.   Disclaim all warranties of CMGI and its licensors and disclaim CMGI's and
     its licensors' liability for any damages, whether direct, indirect,
     incidental or consequential arising from the use of the Database Technology
     (including the Warehouse DSS Server Software Licensed Materials and DSS
     Updates if incorporated into the Database Technology);

7.   Require the sublicensee and/or Reseller, at the termination of the
     sublicense, to discontinue use and destroy or return to Red Brick or
     Reseller the Database Technology (including the Warehouse DSS Server
     Software Licensed Materials and DSS Updates if incorporated into the
     Database Technology), including documentation and all archival or other
     copies;

8.   For copies of the Database Technology (including the Warehouse DSS Server
     Software if incorporated into the Database Technology) sublicensed for use
     in the United States, prohibit transfer of the Database Technology
     (including the Warehouse DSS Server Software Licensed Materials and DSS
     Updates if incorporated into the Database Technology) outside the United
     States; require the sublicensee to comply fully with all relevant export
     laws and regulations of the United States to assure that neither the
     Database Technology (including the Warehouse DSS Server Software Licensed
     Materials and DSS Updates if incorporated into the Database Technology),
     nor any direct product thereof, are exported, directly or indirectly, in
     violation of United States law;

9.   If Red Brick or its Resellers grants an End User License to the United
     States government, the Database Technology (including the Warehouse DSS
     Server Software Licensed Materials and DSS Updates if incorporated into the
     Database Technology) shall be provided with "Restricted Rights" and Red
     Brick or its Reseller will place a legend, in addition to applicable
     copyright notices, on the documentation, and on any media label,
     substantially similar to the following:

     "RESTRICTED RIGHTS LEGEND: Use, duplication, or disclosure by the U.S.
     Government is subject to the restrictions set forth in subparagraph (c) of
     the Commercial Computer Software--Restricted Rights clause of FAR 52.227-
     19."

10.  Specify CMGI and its licensors as intended third-party beneficiaries of Red
     Brick's or its Reseller's rights under any End User License Agreement.

                                       22
<PAGE>


           EXHIBIT 3: LIST OF PRODUCTS TO WHICH WAREHOUSE DSS SERVER
                       SOFTWARE WILL PORT AND/OR INTERFACE


The Warehouse DSS Server Software shall interface with the following Red Brick
products:

     Red Brick Warehouse Version 5.1.4
     Red Brick Formation Version 1.3.2

The Warehouse DSS Server Software shall be provided on the following
hardware/OS environments:

     Intel/Windows NT 4.0
     Sun/Solaris 2.5.1, 2.6

                                       23