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Tag: AOL

AOL problems

Lots of people are reporting ongoing (RTR:GE) messages from AOL today.  This indicates the AOL mail servers are having problems and can’t accept mail. This has nothing to do with spam, filtering or malicious email. This is simply their servers aren’t functioning as well as they should be and so AOL can’t accept all the mail […]

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ISPs speak at M3AAWG

Last week at M3AAWG representatives from AOL, Yahoo, Gmail and Outlook spoke about their anti-spam technologies and what the organizations were looking for in email. This session was question and answers, with the moderator asking the majority of the questions. These answers are paraphrased from my notes or the MAAWG twitter stream from the session. […]

4 Comments

AOL Updates Spam Filtering

Over on the AOL Postmaster blog, Lili Crowley announced yesterday that AOL has made changes to their spam filtering system. Specifically, more senders may be subject to blocking with CON:B1 errors. AOL’s website explains that CON:B1 errors indicate that an IP address is being  blocked “due to a spike in unfavorable e-mail statistics.” This strongly […]

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It’s Thursday: AOL must be having problems

And, in fact, they are. This time I’m seeing random reports of FBL failures. Some folks are seeing a significant (more than 50%) decrease in FBL emails. Other folks are reporting FBL reports that aren’t really FBL reports, but instead look like failed code output. If you’re seeing this kind of problems it’s not just […]

8 Comments

Retrying mail to AOL

I’m working on stuff for MAAWG so I’m really not all that up on what’s happening in the world of email recently. A lot of folks are commenting on my AOL post, and I’m hearing that queues are backing up and emptying as AOL makes changes. One thing people have been asking me is if […]

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Mail problems at AOL

Over the last few months there have been ongoing mail problems at AOL. These problems are all over the map and are resulting in a lot of delayed and unsent email. People are reporting a number of different error messages from AOL mail servers. These messages don’t seem to always be accurate or correct. A […]

14 Comments

AOL bounces and false positives

A number of people have been seeing an increase in AOL bounces over the last few days. Some of these are the new rejection 554/421 CON:B1 message. This is, basically, you’ve topped our thresholds, back off. The other one is a bit more interesting. The error message a lot of people are seeing is 554/421 […]

5 Comments

AOL update

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.

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AOL … again

A number of senders are reporting that they’re getting unusual responses from AOL servers. The responses include: 421 mtain-dk10.r1000.mx.aol.com Service unavailable – try again later 554 mtain-dk03.r1000.mx.aol.com ESMTP not accepting connections mtain-dk* are assigned reserved IP addresses. It looks like something broke inside AOL again, and lots of places are having trouble delivering mail there.

2 Comments

AOL improving

I’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 […]

1 Comment
  • ReturnPath on DMARC+Yahoo

    Over at ReturnPath Christine has an excellent non-technical summary of the DMARC+Yahoo situation, along with some solid recommendations for what actions you might take to avoid the operational problems it can cause.No Comments


  • AOL problems

    Lots of people are reporting ongoing (RTR:GE) messages from AOL today.  This indicates the AOL mail servers are having problems and can't accept mail. This has nothing to do with spam, filtering or malicious email. This is simply their servers aren't functioning as well as they should be and so AOL can't accept all the mail thrown at them. These types of blocks resolve themselves. 1 Comment


  • Fixing discussion lists to work with new Yahoo policy

    Al has some really good advice on how to fix discussion lists to work with the new Yahoo policy. One thing I would add is the suggestion to actually check dmarc records before assuming policy. This will not only mean you're not having to rewrite things that don't need to be rewritten, but it will also mean you won't be caught flat footed if (when?) other free mail providers start publishing p=reject.No Comments


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