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.
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[…] 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 […]
554 mtain-dc03.r1000.mx.aol.com ESMTP not accepting connections
I have this and cannot send emails to aol address. Although I am receiving other people’s emails.