I am having some trouble configuring the SonicWALL to only accept SMTP traffic from a few external IP addresses. We have Hosted Websense which removes spam for us before sending it along to our server.
I created Address Objects on the SonicWALL with the proper network addresses. I then went to Access Rules on the firewall and enabled these address objects to the WAN interface.
Are these supposed to be pointing to the mail servers internal or external interface? I tried both and neither would work.
Attached 3 pics of the setup config... what have i done wrong?