I started a thread under e-mail because I am having a problem getting blacklisted by http://cbl.abuseat.org for a “CBL” violation.
I have been blacklisted five times in the last week.
https://www.techrepublic.com.com/5208-6230-0.html?PromoFeature=discussion&PromoByPassed=1&forumID=84&threadID=166540
The reasons for getting blacklisted are if you are a relay, (tested, not a relay) if you are NAT’ing the address then a different system may be running a trojan on them. I blocked all SMTP traffic from our lan to the internet from all except our mail server.
This is a linux RedHat 7.3 server running Domino 6.5.
The only thing left I can think of is someone hacked my system and is using me for SPAM?
Any advice? Links to follow? Which log files would show this and what to look for?
HTTP,SMTP, and POP are the only ports open to the mail server through our firewall.
Thanks for taking the time to look this over and for any advice you may have.