Hello to all,
First I want to tell you about our system, we have a Barracuda 300 Spam Firewall which filters all incoming mail, then forwards to the MS 2003 Exchange Server. When sending out, Exchange sends to the Barracuda for an out going log and then to the net.
Here is our probelm. Lately, when been receiving spam, from within our network. For example jdoe has a exchange account, and is receiving advertising email from him/her self.
Are we getting relayed?? Where can I check the setting to stop this?
Any luck is appreciated!