Except that this is not applicable. In my case my mailserver is not hosted at Swisscom but on my own infrastructure, is on the same IP since years, has proper MX records and reverse DNS entries and has delivered email to the same bluewin customer yesterday successfully. Only the reply on that receiver today which I received and replied again got rejected. And the response is cryptic to me.
And if you mail to [email protected] <mailto:[email protected]> you get the same error... So who is this famous DNSNULL I should contact? > On 11 Jul 2019, at 13:49, Florin sfetea <[email protected]> wrote: > > See > https://community.swisscom.ch/t5/E-Mail/Bluewin-akzeptiert-E-Mails-von-eigener-Domain-nicht/td-p/570002 > > <https://community.swisscom.ch/t5/E-Mail/Bluewin-akzeptiert-E-Mails-von-eigener-Domain-nicht/td-p/570002> > > > Beste Grüsse, Regards si s-auzim de bine > Florin Sfetea > > From: [email protected] <mailto:[email protected]> > Sent: Thursday, July 11, 2019 12:00 > To: [email protected] <mailto:[email protected]> > Subject: swinog Digest, Vol 174, Issue 3 > > Send swinog mailing list submissions to > [email protected] <mailto:[email protected]> > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog > <http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog> > or, via email, send a message with subject or body 'help' to > [email protected] <mailto:[email protected]> > > You can reach the person managing the list at > [email protected] <mailto:[email protected]> > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of swinog digest..." > > > Today's Topics: > > 1. bluewin & DNSNULL (Andreas Fink) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 11 Jul 2019 11:32:38 +0200 > From: Andreas Fink <[email protected] <mailto:[email protected]>> > To: "[email protected] <mailto:[email protected]>" <[email protected] > <mailto:[email protected]>> > Subject: [swinog] bluewin & DNSNULL > Message-ID: <[email protected] > <mailto:[email protected]>> > Content-Type: text/plain; charset="us-ascii" > > > Does any one have a clue what DNSNULL means in the following context of a > mail delivery error? > > > > <[email protected] <http://bluewin.ch/> <mailto:[email protected] > <mailto:[email protected]>>> (mx-v02.bluewin.ch > <http://mx-v02.bluewin.ch/> <http://mx-v02.bluewin.ch/ > <http://mx-v02.bluewin.ch/>>: 554 mxbw.lb.bluewin.ch > <http://mxbw.lb.bluewin.ch/><http://mxbw.lb.bluewin.ch/ > <http://mxbw.lb.bluewin.ch/>> vim > dzmsp-mxin12.bluewin.ch <http://dzmsp-mxin12.bluewin.ch/> > <http://dzmsp-mxin12.bluewin.ch/ <http://dzmsp-mxin12.bluewin.ch/>> Swisscom > AG IP: 79.134.251.203, You are not allowed > to send us mail. Please see DNSNULL if you feel this is in > error)Reporting-MTA: dns; mail.fink.org <http://mail.fink.org/> > <http://mail.fink.org/ <http://mail.fink.org/>> > Arrival-Date: Thu, 11 Jul 2019 11:19:58 +0200 > ... > > > > Andreas Fink > ------------------------------------------------------------------ > Paradieshofstrasse 101, 4054 Basel, Switzerland > [email protected] <mailto:[email protected]> <mailto:[email protected] > <mailto:[email protected]>> https://www.fink.org <https://www.fink.org/> > <https://www.fink.org/ <https://www.fink.org/>> > Mobile: +41-78-6677333 Office: +41-61-6666330 Home: +41-61-6666345 > Skype: andreasfink Jabber/XMPP: [email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> ICQ: 8239353 > Twitter: @kiwi66 PGP Key: https://www.fink.org/FILES/afink-pgp.asc > <https://www.fink.org/FILES/afink-pgp.asc> > ------------------------------------------------------------------ > > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <http://lists.swinog.ch/public/swinog/attachments/20190711/87899b9d/attachment-0001.html > > <http://lists.swinog.ch/public/swinog/attachments/20190711/87899b9d/attachment-0001.html>> > > ------------------------------ > > _______________________________________________ > swinog mailing list > [email protected] <mailto:[email protected]> > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog > <http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog> > > > End of swinog Digest, Vol 174, Issue 3 > ************************************** > > > _______________________________________________ > swinog mailing list > [email protected] <mailto:[email protected]> > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog > <http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog>
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