MAPI connection issues
I have an environment that is experiencing issues with connecting to Exchange 2010 servers over a WAN link from an EV 9 server. The problem appears to be intermittent which has occured over the last 24 hours or so.
The environment consists of 3 clustered Exchange servers with the active nodes in the production site and the passive nodes in DR. The issue appeared to have started when the Exchange servers were failed over. So I stopped services, cleared out the queues, restarted server and all was fine until earlier today where it started up again.
I found that I was not able to open up any of the EV realated accounts in Outlook (got the username/password screen), but a server restart did the trick for about an hour or so when the issue reappeared. It hanged around for close to an hour before it disappeared again, but before it did I ran an DTrace on the ArchiveTask and found that it logged:
Event ID: 3422 An Enterprise Vault task is not correctly configured.The task account's mailbox must have an appropriate Exchange Server 2010 throttling policy applied.
I have since checked the Event Viewer and confirmed that those errors are being logged there too.
Now the strange thing is that the throttling policy has been checked and found to be set correctly in Exchange. To compound things a little bit, what has also been noticed is that archiving does run at a very slow rate which may be due to the fact that the WAN link is also heavly utilized.
I'm looking for some explananation to give back to the client and I'm thinking that it these issues be possible due to bandwidth constraints in the environment.
Would that be possible at all or could there be other factors that are at play here?