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**EXHIBIT 32.1**

**CERTIFICATION      PURSUANT TO**

**18 U.S.C.      SECTION 1350,**

**AS      ADOPTED PURSUANT TO**

**SECTION 906      OF THE SARBANES-OXLEY ACT OF 2002**

|   | (1) | The                Report fully complies with the requirements of §13(a) or 15(d) of the                Securities Exchange Act of 1934;                and |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (2) | The                information contained in the Report fairly presents, in all material                respects, the financial condition and results of operations of the                Operating Partnership. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

| Date:           October                31, 2007 | By:    | /s/                Mitchell E. Hersh                                                      |   |
|--------------------------------------------------------------------------------------------------------|--------|-------------------------------------------------------------------------------------------|--------|
|                                                                                                   |   | Mitchell                E. Hersh                                                          |
|                                                                                                   |   | President                and Chief Executive Officer                                      |
|                                                                                                   |   |   of                Mack-Cali Realty Corporation,                               |
|                                                                                                   |   | *  *the                general partner of Mack-Cali Realty, L.P.                |
|                                                                                                   |   |                                                                                      |
|                                                                                                   |   |                                                                                      |
| Date:           October                31, 2007 | By:    | /s/                Barry Lefkowitz                                                        |   |
|                                                                                                   |   | Barry                Lefkowitz                                                            |
|                                                                                                   |   | Executive                Vice President and                                               |
|                                                                                                   |   |   Chief                Financial Officer                                        |
|                                                                                                   |   |   of                Mack-Cali Realty Corporation,                               |
|                                                                                                   |   | *  *the                general partner of Mack-Cali Realty,                L.P. |

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