[Pkg-exim4-users] Google complains that I don't have an IPv6 PTR record

[Brian E. Lavender]

My mail server has an IPv4 address, but now that I moved to a new ISP, it
complains that I don't have a PTR record. I tried putting in DKIM thinking
that would fix the issue, but I don't see any signing headers either in
my outbound email.

Any tips?

brian


A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

  brieweb at gmail.com
    SMTP error from remote mail server after end of data:
    host gmail-smtp-in.l.google.com [2607:f8b0:400e:c04::1a]:
    550-5.7.1 [2601:646:8f00:d900:2e0:81ff:fe2f:7041] Our system has detected that
    550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR
    550-5.7.1 records and authentication. Please review
    550-5.7.1  https://support.google.com/mail/?p=ipv6_authentication_error for more
    550 5.7.1 information. b14si1009229pat.152 - gsmtp

-- 
Brian Lavender
http://www.brie.com/brian/

"There are two ways of constructing a software design. One way is to
make it so simple that there are obviously no deficiencies. And the other
way is to make it so complicated that there are no obvious deficiencies."

Professor C. A. R. Hoare
The 1980 Turing award lecture