Hallo,
die Zustellung der Bestätigungsmail scheint zu Fehlern zu führen. Im Testbetrieb tauchten diese nie auf und ich rätsel nun, wo der Grund liegen könnte für: "Our system has detected that this 550-5.7.1 message does not meet IPv6 sending guidelines"
Vielen Dank für einen Tipp.
Ursprüngliche Nachricht
Von: Mail Delivery System [mailto:MAILER-DAEMON@rw0b45.webhosting.systems]
Gesendet: Mittwoch, 14. Oktober 2020 09:52
An: coexxxx@online.de
Betreff: Undelivered Mail Returned to Sender
This is the mail system at host rw0b45.webhosting.systems.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
<robertxxxxx@gmail.com>: host
gmail-smtp-in.l.google.com[2a00:1450:400c:c0a::1b] said: 550-5.7.1
[2a03:4000:2c:294:13:9160:0:15] Our system has detected that this 550-5.7.1
message does not meet IPv6 sending guidelines regarding PTR records
550-5.7.1 and authentication. Please review 550-5.7.1
support.google.com/mail/?p=IPv6AuthError
for more information 550
5.7.1 . a22si1364817wme.116 - gsmtp (in reply to end of DATA command)
Reporting-MTA: dns; rw0b45.webhosting.systems
X-Postfix-Queue-ID: AE3251A2422
X-Postfix-Sender: rfc822; coembo@online.de
Arrival-Date: Wed, 14 Oct 2020 09:52:24 +0200 (CEST)
Final-Recipient: rfc822; robertxxxxx@gmail.com
Original-Recipient: rfc822;robertxxxxxxx@gmail.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [2a03:4000:2c:294:13:9160:0:15] Our system has
detected that this 550-5.7.1 message does not meet IPv6 sending guidelines
regarding PTR records 550-5.7.1 and authentication. Please review 550-5.7.1
support.google.com/mail/?p=IPv6AuthError
for more information 550
5.7.1 . a22si1364817wme.116 - gsmtp