High volume of outgoing emails being relayed through Exchange
Posted on 2008-10-07
Hi there, we have a HUGE amount of email (which I've only just noticed) being sent out through our client's exchange server.
I logged into OWA, and noticed there was arround 40000 emails in the inbox, nearly all of them were bouncebacks from various people. I then checked Exchange tracking centre, and its just spewing out loads of emails.
I'm pretty sure open relay isn't enabled on the server, as I've compared the config with another SBS server.
is there anyway I can track where these emails are being sent from? Perhaps they are coming from a client with a virus on.
I'm surprised they haven't been blacklisted...
ANy help would be much appreciated.