Hi, thanks for your fast and detailed reply!
i will follow your suggestion regarding tackling the system by marking a sender as safe, so it might reconsider its decisions. as a side note: at least here in germany, discarding mail without any notification of the sender or recipient is called supression and is illegal (ยง206 StGB). Best Regards Andreas -------- Original-Nachricht -------- Betreff: Re: [mailop] Microsoft/Hotmail discards mails Von: Michael Wise <michael.w...@microsoft.com> An: Andreas Ziegler <m...@andreas-ziegler.de>, mailop@mailop.org <mailop@mailop.org> Datum: 9.6.2016, 04:08:39 > > At the request of the customer-base, traffic that is classified as > sufficiently spammy (by various "Black Box" algorithms that I have no > knowledge of the inner workings...) is deleted even after a successful > delivery. > > At one point, Hotmail tried to turn off the delete action for sufficiently > spammy, and just delivered it into Junk; Customers complained. Loudly. So > whether the system is correctly classifying your traffic or not, I cannot > say. But the behavior is not unexpected in certain scenarios. Which one of > them applies to you, I cannot say. Even if I wanted to! But I really have no > idea, and no way to find out. > > This "Delete" action is a well-known mitigation that is not unique to Hotmail. > > About the only way around it would be to login to your test account, and safe > sender the sending email address. > Among other things, that will force the system to reconsider the verdict that > it has assigned to the IP and the traffic coming from it. > > It's possible that the IPs have a left-over bad reputation from a previous > sender, but that's difficult to tell. > > Good luck. > > Aloha, > Michael. > _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop