Topic: Our system has detected that this message does 550-5.7.1 not meet
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====
I get e-mail on alias allegro@x.pl, and i reply from don@x.pl
This is the mail system at host ns352115.ip-91-121-79.eu.
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
<tuopony@gmail.com>: host gmail-smtp-in.l.google.com[2a00:1450:400c:c01::1b]
said: 550-5.7.1 [2001:41d0:1:8433::] Our system has detected that this
message does 550-5.7.1 not meet IPv6 sending guidelines regarding PTR
records and 550-5.7.1 authentication. Please review 550-5.7.1
https://support.google.com/mail/?p=ipv6_authentication_error for more 550
5.7.1 information. ly10si2846256wjb.9 - gsmtp (in reply to end of DATA
command)
Final-Recipient: rfc822; tuopony@gmail.com
Original-Recipient: rfc822;tuopony@gmail.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [2001:41d0:1:8433::] Our system has detected
that this message does 550-5.7.1 not meet IPv6 sending guidelines regarding
PTR records and 550-5.7.1 authentication. Please review 550-5.7.1
https://support.google.com/mail/?p=ipv6_authentication_error for more 550
5.7.1 information. ly10si2846256wjb.9 - gsmtp----
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