I use Outlook as my email client, accessing all of my various mail boxes with the one client. It has worked great for many years. But my AOL out bound SMTP connection stopped working on Thursday. (Inbound works fine.) I get this error: "The server responded: 521 5.2.1 521 AOL will not accept delivery of this message."
I checked the SMTP outbound settings and they are correct (nothing had changed). So I checked the email app on my Android device and it's throwing the same errors on send, so clearly it's not my Outlook that is broken. And it's not my AOL account because I can send using the web interface to AOL mail.
It looks like AOL is doing something, maybe a reverse DNS lookup on the STMP sending server (my Outlook client, not Verizon as a relay) and not accepting messages I send because of a problem with the reverse DNS lookup. Does anyone know if Verizon did anything on their DNS end that may have change? Or has anyone seen this?
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