Consider the following scenario:
| • | You upgrade to Microsoft Exchange Server 2007 Service Pack
1 (SP1) on the Client Access server |
| • | A user who has a mobile device may try to connect to
a mailbox on an Exchange Server 2003-based server. |
In this scenario, the user may be unable to synchronize with the
mailbox any more.
If verbose logging is enabled on the mobile device, the "HTTP 503" error code
is logged.
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This problem occurs because the
SAMAccountName attribute of the mobile device user matches the Simple Mail
Transfer Protocol (SMTP) address
of another user on a different mailbox server .
The server that is running Exchange Server 2007 SP1 assumes that its SMTP
address belongs to another user on another mailbox server. Therefore, the “HTTP
302” error code is returned. The Exchange ActiveSync handler assumes that a
mailbox has been recently migrated from Exchange Server 2003 to Exchange Server
2007. Therefore, the handler blocks synchronization until replication is
complete. In this scenario, the user can never synchronize with the
mailbox.
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Update information
Download and install Update Rollup 2 for Exchange Server 2007
SP1. For more information, click the
following article number to view the article in the Microsoft Knowledge Base:
948016 (http://support.microsoft.com/kb/948016/)
Description of Update Rollup 2 for Exchange Server 2007 Service Pack 1
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To work around this problem, change the primary SMTP address
on the
E-mail Addresses tab of the user account property so
that it does not match the
SAMAccountName attribute of another user.
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Microsoft
has confirmed that this is a problem in the Microsoft products that are listed
in the "Applies to" section.
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To enable verbose logging on the mobile device, follow these
steps:
| 1. | Open ActiveSync from the mobile device, click
Menu, and then click Configure
Server. |
| 2. | In the Edit Server Settings window, click
Next. |
| 3. | Click Advanced. |
| 4. | In the Event logging field, click
Verbose, click Next, and then click
Finish. |
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