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.
There are a number of sites online that provide public information about reputation of an IP address or domain name.
Read MoreI’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 MoreI’m hearing from lots of folks that they’re seeing some improvement in delivery to AOL accounts.
As everyone can imagine, the AOL situation has been a common thread of discussion on many delivery lists. One person even commented at how fragile the AOL mail server seems. My own thoughts are a little different. The AOL mail system is notoriously complex and integrated. Many of the folks who built it have been laid off or otherwise moved on to other companies. I know there are still smart, competent people riding herd on the AOL mail servers, but I expect they don’t have the resources to do the ongoing maintenance and the fire fighting and all the other tasks that a mailserver handling billions of emails needs.
What this means is that the AOL mail system has been suffering from bit rot for at least 2 years. It is to the original designers’ credit that it’s taken this long before there were major problems like we’ve seen over the last week.