I mentioned the other day that I disabled greylisting on my email server because Cluebringer was greylisting MX Guard Dog's smtp servers. Well ever since I did that I've been getting a lot of spam again.
I figured out how I can keep greylisting enabled, and white list individual IP's.
What I did was I opened up /var/log/mail.log and searched for action=reject. I found a string similar to this:
module=Greylisting, action=reject, host=18.104.22.168, helo=s480b.ik2.comI copied the IP address then went into my Cluebringer administration page at https://mainserver/cluebringer. I logged in with my iRedmail admin credentials and on the left I found Greylisting Whitelist. In there I added the host IP to the white list, then set disabled to no.
After that I restarted the Cluebringer daemon by running:
service postfix-cluebringer restartAfter that email started flowing correcly again, yet I get to keep the protection of greylisting enabled! Win win!