I'm getting some messages bounced from google with the following message
> host aspmx.l.google.com [2607:f8b0:4002:c08::1a]
> SMTP error from remote mail server after pipelined end of data:
> 550-5.7.1 [2603:3001:600:4a00::8a4d] Our system has detected that this message
> 550-5.7.1 does not meet IPv6 sending guidelines regarding PTR records and
> 550-5.7.1 authentication. Please review
> 550-5.7.1https://support.google.com/mail/?p=IPv6AuthError for more information
> 550 5.7.1 . bd16-20020a05690c011000b00317b6ac906asi14707597ywb.433 - gsmtp
There are no IPv6 records set up and I've gone through with my ISP
(Comcast) to check the PTR records. The odd thing is that this only
seems to affect some users and usually those that have their own domain.
Standard gmail.com accounts seem unaffected.
I'd appreciate any tips on trouble shooting this problem.
--
Robert Steinmetz, AIA
Principal
Steinmetz & Associates
