Outlook synchronization error

[SSI]

Good evening, we are using Outlook 2003 and MS exchange 2003 with all the
patches and updates.
We are having this reoccurring problem with a number of users. So far we
have tried the following: rebuilt the profiles, the database as well as the
OST with no luck. The message mentioned under "Synchronizing local changes
in folder 'Conflicts' appears actually in the inbox!
The link provided with the error takes you to the Microsoft support site and
there is no solution there.
We will be very grateful if anyone has any suggestions on how to fix this.

Here is the error:

20:14:15 Synchronizer Version 12.0.4518
20:14:15 Synchronizing Mailbox 'XXXXXXXXXXs'
20:14:15 Synchronizing local changes in folder 'Conflicts'
20:14:15 Uploading to server 'exchange.XXXXX.internal'
20:14:15 Error synchronizing message 'RE: your laptop'
20:14:15 [80004005-501-0-1380]
20:14:15 The client operation failed.
20:14:15 Microsoft Exchange Information Store
20:14:15 For more information on this failure, click the URL below:
20:14:15
http://www.Microsoft.com/support/prodredirect/outlook2000_us.asp?err=80004005-501-0-1380
20:14:15 Moved a message that failed synchronization to 'Local Failures'.
Message subject -> 'RE: your laptop'. You can view this message in your
offline folder file only.
20:14:15 Done

 

[Dave Burns]

Go to the Exchange System Manager and turn up logging on your information
store. You will get all the info you need there, and will probably on have
to leave the logging turned up for a day or two to determine the problem.

-- Dave