Hello! When I realized the rebuild of the Default Offline Address List using Exchange System Manager (Exchange 2003), the following errors are logged in Event Viewer: Event Type: Warning Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9327 Date: 13/7/2010 Time: 18:00:37 User: N/A Computer: CSUBHWCPRO12 Description: OALGen skipped some entries in the offline address list '\Global Address List'. To see which entries are affected, event logging for the OAL Generator must be set to at least medium. - Default Offline Address List For more information, click http://www.microsoft.com/contentredirect.asp. ________________ Event Type: Error Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9360 Date: 13/7/2010 Time: 18:00:36 User: N/A Computer: CSUBHWCPRO12 Description: OALGen encountered an error while generating the changes.oab file for version 2 and 3 differential downloads of address list '\Global Address List'. The offline address list has not been updated so clients will not be able to download the current set of changes. Check other logged events to find the cause of this error. If the cause of the problem was intentional or cannot be resolved, OALGen can be forced to post a full offline address list by creating the DWORD registry key 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchangeSA\Parameters\OAL post full if diff fails' and setting it to 1 on this server. When OALGen next generates the offline address list, clients will perform a full OAB download. After that time, the registry key should be removed to prevent further full downloads. - Default Offline Address List For more information, click http://www.microsoft.com/contentredirect.asp. ________________ Event Type: Warning Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9340 Date: 13/7/2010 Time: 18:00:36 User: N/A Computer: CSUBHWCPRO12 Description: A new parent Legacy Exchange DN container value '/o=CSU/ou=CSUBH/cn=Recipients/cn=CardSystem/cn=Nao Cartao/cn=Usuarios/cn=Servicos' was found during generation of the differential update file for offline address list '\Global Address List'. This will force clients using this offline address list to do a full download of the offline address list. - Default Offline Address List For more information, click http://www.microsoft.com/contentredirect.asp. __________________ Event Type: Error Event Source: MSExchangeSA Event Category: OAL Generator Event ID: 9325 Date: 13/7/2010 Time: 18:00:34 User: N/A Computer: CSUBHWCPRO12 Description: OALGen will skip user entry 'Terceiros' in address list '\Global Address List' because the SMTP address '' is invalid. - Default Offline Address List For more information, click http://www.microsoft.com/contentredirect.asp. How to solve these problems? Thanks.

Please refer to below link. http://www.corelan.be:8800/index.php/2009/05/22/fixing-exchange-2007-offline-address-book-generation-oalgen-and-distribution-issues/ OALGen will skip user entry 'Terceiros' in address list '\Global Address List' because the SMTP address '' is invalid. - Default Offline Address List Please check this user email address format.

Hi, Please try to add the registry key via the following steps: 1. Click Start, click Run, type regedit, and then click OK. 2. Locate and then click to select the following registry key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MSExchangeSA\Parameters 3. On the Edit menu, point to New, and then click DWORD Value. 4. Type “OAL post full if diff fails”, and then press ENTER. 5. Right-click “OAL post full if diff fails”, and then click Modify. 6. In the value data box, type 0x1 (1) 7. Quit Registry Editor. How to Generate a Full Offline Address Book Download File When a Differences File Cannot Be Generated http://technet.microsoft.com/en-us/library/bb124299(EXCHG.65).aspx Error message when a user performs the Send/Receive operation in Outlook:"Unknown error 0x8004011B" http://support.microsoft.com/kb/922255 Regards, Xiu