I noticed you are using PowerMTA. You can defer these emails instead of bouncing by adding this to your <smtp-pattern-list>:
reply /554 Transaction failed/ skip-mx We saw the last of these errors on the 19th. I am willing to share SMTP traces if it’s still relevant. Maarten Oelering Postmastery W: postmastery.com T: +31 20 261 0438 > On 25 feb. 2016, at 20:31, Dickie LaFlamme <rlafla...@dyn.com> wrote: > > I wanted to see if other followers have heard any chatter about Microsoft > incorrectly classifying hard bounces for other providers/customers. We've > been trying to get to the root cause of why they could be creating so many > false positives for our platform over the past few weeks. > > Final-Recipient: rfc822; (taken out for confidentially)@hotmail.com > <http://hotmail.com/> > Action: failed > Status: 5.4.0 > > By the RFC they should be at least including a diagnostic code, but they are > not, this is from a full header to note as well. > > Final-Recipient: rfc822;(taken out for confidentially)@hotmail.com > <http://hotmail.com/> > Action: failed > Status: 5.0.0 (undefined status) > Remote-MTA: dns;mx3.hotmail.com <http://mx3.hotmail.com/> (65.55.33.135) > Diagnostic-Code: smtp;554 Transaction failed > X-PowerMTA-BounceCategory: other > > Essentially all we got back from Microsoft was that "this should be > classified as a soft bounce in your system": No help since we knew that. > We've since reclassified that bounce as well as this bounce below: > > Final-Recipient: rfc822; (taken out for confidentially)@hotmail.com > <http://hotmail.com/> > Action: failed > Status: 5.5.4 > Diagnostic-Code: smtp;501 5.5.4 Invalid arguments > > > We've seen this occuring at Hotmail, Live.com <http://live.com/> and > Outlook.com <http://outlook.com/>. I'm not looking for a golden ticket from > anyone, but I wanted to see if fellow Deliverability professionals are seeing > these kind of problems from Microsoft domains. We're just left scratching our > heads as we try to fight these fires for our customers both the > deliverability team and engineers. > > Has anyone else been having these problematic issues with Microsoft domains? > Thanks, > > <http://dyn.com/> <http://twitter.com/dyn> > <http://twitter.com/dyninc> <http://facebook.com/dyn> > <http://twitter.com/dyninc> <http://linkedin.com/company/dyn> > Dickie LaFlamme / Deliverability Specialist > > > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
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