I've having some trouble with Exchange Server 2013 (v15.0.847.4030 installed on a single server running Windows Server 2012 R2) and it's anti-spam configuration that I hope someone will be able to assist me with.
I have enabled content filtering via the Management Console with delete and reject disabled and quarantine enabled with a SCLQuarantineThreshold of 5.
While I am receiving messages in the mailbox set as the quarantine mailbox, they are simply non-delivery reports received from the 'postmaster' account. However, my understanding from the documentation found on the Technet site for Exchange Server suggests that the original messages should be delivered to the quarantine mailbox (with the ability to re-send the message if required) not NDRs.
I have read through the 'Configure a Spam Quarantine Mailbox' guide @ http://technet.microsoft.com/en-us/library/bb123746%28v=exchg.150%29.aspx and I believe everything is setup as it should be. I've also searched to see if anyone else is experiencing a similar problem and have come up blank. This is our first installation of Exchange Server 2013, so we're learning as we go in terms of how to use and administer Exchange Server.
Can anybody point me in the right direction?
Many thanks.