I've upgraded our 2013 server to CU9 and have enabled MessageCopyForSentAsEnabled and MessageCopyForSendOnBehalfEnabled. Now I see the following warnings in the application log of the Exchange server

MSExchange Extensibility
1051

Agent 'Shared Mailbox Sent Item Agent' caused an unhandled exception 'SmtpResponseException: 250 2.1.5 SharedMailboxSentItemsAgent; Sent item copy to shared mailbox successfully.' while handling event 'OnPromotedMessage'

All works well, can I ignore this message?

Thnx Remco

• Edited by Remco Tiel Friday, June 26, 2015 10:13 AM

Hi Remco,

Base on my knowledge, if you don't use any third party agents, and all mail flow works well, you can ignore this event safely.

In addition, if you install any anti-virus / anti-spam software, you can try to disable it temporally and check if the event disappeared.

Best regards,  

Hello Niko,

Thnx for your reply. We don't have in any anti-virus / anti-spam installed on the exchange server itself. I will ignore this event for now....

Remco