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 abuse@bluewin.ch mailto:abuse@bluewin.ch you get the same error...
So who is this famous DNSNULL I should contact?
On 11 Jul 2019, at 13:49, Florin sfetea f_sfetea@yahoo.com wrote:
See https://community.swisscom.ch/t5/E-Mail/Bluewin-akzeptiert-E-Mails-von-eigen... 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: swinog-request@lists.swinog.ch mailto:swinog-request@lists.swinog.ch Sent: Thursday, July 11, 2019 12:00 To: swinog@lists.swinog.ch mailto:swinog@lists.swinog.ch Subject: swinog Digest, Vol 174, Issue 3
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Today's Topics:
- bluewin & DNSNULL (Andreas Fink)
Message: 1 Date: Thu, 11 Jul 2019 11:32:38 +0200 From: Andreas Fink <afink@list.fink.org mailto:afink@list.fink.org> To: "swinog@swinog.ch mailto:swinog@swinog.ch" <swinog@swinog.ch mailto:swinog@swinog.ch> Subject: [swinog] bluewin & DNSNULL Message-ID: <75DA5D85-1A68-4D10-94B8-6237FD9D54DB@list.fink.org mailto:75DA5D85-1A68-4D10-94B8-6237FD9D54DB@list.fink.org> 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?
<....@bluewin.ch http://bluewin.ch/ <mailto:claudine.beaud@bluewin.ch mailto:claudine.beaud@bluewin.ch>> (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 andreas@fink.org mailto:andreas@fink.org <mailto:andreas@fink.org mailto:andreas@fink.org> 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: andreas@fink.org mailto:andreas@fink.org <mailto:andreas@fink.org mailto:andreas@fink.org> ICQ: 8239353 Twitter: @kiwi66 PGP Key: https://www.fink.org/FILES/afink-pgp.asc https://www.fink.org/FILES/afink-pgp.asc