Gregor Riepl wrote: >> It is truly weird. Using the same sender and same path, one email >> to "some.u...@hotmail.com" is accepted, another >> to "postmas...@hotmail.com" is rejected. > > They are probably ramping up rejection rates slowly, as suggested > here: https://dmarc.org/overview/
After I filed a support request with Microsoft, they got back to me fairly quickly and said one of our IP-ranges was "a candidate for mitigation". No other explanation offered. I don't see this being a dmarc issue at all, but some sort of internal M$ "reputation list". Thanks for everyone's suggestions! -- Per Jessen, Zürich (4.0°C) http://www.hostsuisse.com/ - dedicated server rental in Switzerland. _______________________________________________ swinog mailing list swinog@lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog