I recently purchased a Sonicwall TZ215 unit and have a question on configuring the mail flow across SMTP. I have found a document online about how to limit inbound access on port 25 except from certain IPs (my GFI spam filter) and I have enable it, by creating the access rule, NAT policy and service object. However, when I ran through the wizard and setup a Mail server, it listed standard ports of (IMAP, POP, and SMTP) be default. My question is, do I need to remove the SMTP port from that configuration? I am not sure if by doing that wizard I emabled all SMTP mailflow to my email server, and now my spam filter settings I just created are invalid and not enforced. I hope this makes sense, I tried to explain the best I could. If you need more clarity, I will try my best if you let me know.