Wade Peacock <wade.peacock@sunwave.net> writes:
We have found ATT to be heavy handed with their email (spam) filtering. Without warn all of our mail servers will be denied from delivering email to their many domains (att.net, bellsouth.net, etc). They have a removal request form (like most other large ISPs) which takes 2 days to process. We never find out why the we get listed.
We have dealt with issue in the past. AT&T maintains an internal blacklist and their blacklist policies are not published. There is also no feedback loop mechanism in place, AFAICT. I do know that sending backscatter to AT&T will get you in their blacklist. If your server sends NDRs instead for rejecting during the SMTP transaction for 5xx type messages then that is probably what got you on their list. The email address we have used at AT&T to resolve these issues is: <abuse_rbl@abuse-att.net>. Make sure that all of issues which caused your blacklisting are resolved because if they put you on the list again, it is much tougher to get removed. -- Bob Poortinga K9SQL <http://www.linkedin.com/in/bobpoortinga> Bloomington, Indiana US