Some users will not Synchronize (errors 2776, 3196 and 3188 from Agent Client Broker)

Hi,

Having issues trying to sync a few people.

A few, not all... nothing in common with the people having the issues. The accounts look fine and they are on a DC where other stuff seems to work normally.

Please see the attached log of what I get when I run a SYNC against a user having the issue:

----------------------------------------------
Event 2776 from Agent Client Broker

An exception occurred in routine

CAgentExchSynch::ReadExchPropertiesFromMailbox2k

----------------------------------------------
Event 3196  from Agent Client Broker

An error has occured whilst synchronizing the properties of mailbox /O=Menzies Transport Services/OU=NTAMI/cn=Recipients/cn=joel.moulton on Exchange server PRMAIL02.

Error: An exception occurred in routine    [0xc0040ad8]

Internal: .\AgentExchSynch.cpp (CAgentExchSynch::SynchronizeMailboxEntryEx2) [lines {784,869,873,888,906,917,939,940,950}] built May 27 14:48:55 2008
----------------------------------------------
Event 3188  from Agent Client Broker

An error occurred performing a request to synchronize the mailbox /O=Menzies Transport Services/OU=NTAMI/cn=Recipients/cn=joel.moulton.

Error: An exception occurred in routine    [0xc0040ad8]
----------------------------------------------

I found an old forum post that said I should run dtrace against the faulting item, in this case, Agent Client Broker. Which I ran.

Here is the error when it failed (sorry for the length and if I have too much stuff / not enough).

----------------------------------------------------------------------------

I am running EV 2007 on a 2003 ent server.

As I say, other users on the same exchange / ad are fine, but I have a handful of ones broken in this way.

Any idea what I can do? I have tried a reboot of both the EV server and the DC it is using.

Many thanks for your help

James