A reader has been talking with AOL about the mtain* responses that people were receiving. AOL has said both responses mentioning mtain-*.r1000.mx.aol.com are actually DNY:T1 bounces that are being presented incorrectly. Both responses should be treated the same as 421 DYN:T1.
I’m still hearing reports that AOL is still having problems accepting mail. I’ve also heard they’re still working on it. There is no information on when a fix may be finished.
Read MoreA number of senders are reporting that they’re getting unusual responses from AOL servers. The responses include:
Read MoreThere have been ongoing reports this week from ESPs and ISPs that AOL is having problems accepting email. People are reporting difficulties connecting to AOL MTAs and random dropping of connections. Other people are reporting random rejection messages that make no sense. A number of folks are seeing rejections claiming that the reason is a new IP when that IP has successfully sent mail from that IP in the recent past.
AOL seems to be working on things, and some people are seeing improvements. If you’re seeing AOL problems recently, it’s not you. It’s them.
EDIT: AOL has asked senders to please reduce mail volume while they are resolving issues.