On Wed, 19 Oct 2022 at 13:32, Heiko Schlittermann via mailop <mailop@mailop.org> wrote: > A given mailhost (ran privately for smaller entities) can't send > messages to T-Online anymore. > > 554 IP=168.119.159.241 - A problem occurred. …
Do you get this error at the connection or after you transmitted the message? If you get the error after the "DATA" and "." then maybe you just need DKIM+DMARC compliance for your emails. In this case look for an old thread here: "DKIM+DMARC at t-online.de (Deutsche Telekom's ISP branche)" by florian.kun...@telekom.de (Apr 6 2021) -- Stefano Bagnara Apache James/jDKIM/jSPF VOXmail/Mosaico.io/VoidLabs _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
