Hello All,
Today out of the blue our Exchange server 2013 install started rejecting any inbound message as spam. It first started with only one user not being able to receive any mail because of this anomaly and
then after 12 or so hours all users were getting their mail rejected.
I currently had the threshold set to 5 on external messages only. Internal is disabled.
I have tried setting the threshold to 8 and 9, and rebooted the server after restarting all services just to make sure everything reset. Even dished out a IISRESET just in case. Whatever I tried still does not work.
The install is a stand alone server facing the outside world (no edge server) living in a 2 domain controller environment with a share point farm thrown in (ESXI5.5 environment) Everything works just fine and dandy if I disable the content filter all together. Not seeing anything in the application logs out of the ordinary. Everything was working great and the same settings I used on this server worked well for a totally different server that runs just fine.
Any ideas?
fr0stsp1re