Hey Guys
I am managing a Sophos XG115w Firewall. Firmware version: SFOS 16.05.8 MR-8 (haven't upgraded to 17 yet, have heard it's still a bit buggy).
Behind the firewall I have an Exchange 2010 server (fully patched), with a self signed cert (it's old, we'll migrate to O365 at some point).
Our public IP randomly get's listed on Spamhaus CSS (every month or so). I've scanned the network for the usual stuff (infections etc) and it's coming up clean. I've also checked the Exchange outgoing smtp logs and don't see anything strange there either. Incoming spam filtering is enabled on the XG115w (I've also added their domain name to the spam filtering list to get rid of NDR's for spoofed emails as I read an article about that on the community, hopefully that's not contributing to the Spamhaus listing).
I figured I would configure outbound spam filtering on the XG115w to see what it picks up, in-case it can help track down what might be happening and if there is actually spam coming from the network.
However, I've not configured outbound spam filtering on this device before or sure if it's a good idea with an older Exchange server with a self signed cert. If it's ok to setup outbound spam filtering, how would I go about doing it? Should I also set it up for smtp, pop, imap too, if so how?
Kind regards
Aaron
This thread was automatically locked due to age.
