SIR Plus Error: Could not communicate with the Exchange Agent: Error in call with Exchange Agent, Connection reset
When backing up using the SIR Plus plug-in, the following error is reported and the SIR Plus element of the backup fails:
Error: 10:50:31 [Exchange SIR Plus Plug-in] Could not communicate with the Exchange Agent: Error in call with Exchange Agent, Connection reset.
There seems to be an issue with Microsoft Exchange Server 2010 prior to Service Pack 3 that can cause a connection issue.
Upgrade to Exchange Server Pack 3. You can check your version here: http://social.technet.microsoft.com/wiki/contents/articles/240.exchange-server-and-update-rollups-build-numbers.aspx
Ensure you are also running the V7.0.2 Backup Client and SIR Plus plug-in (v1.6.84)