Steffan A. Cline:
> Clearly this list is for postfix related issues which I do use regularly
> but there is a great deal of respected expertise here and am hoping
> someone will have come across this before.
>
> I?ve run into an issue with a postfix server I set up for a friend when
> connecting to Gmail. The message returned contains the following headers
> but has varied until finally just this:
>
> <azgoldsavi...@gmail.com> <mailto:azgoldsavi...@gmail.com>: host
> gmail-smtp-in.l.google.com[2607:f8b0:400e:c01::1a] said: 550-5.7.1
> [2605:d400:0:b:216:3eff:fe63:ca2f 12] Our system has detected
> 550-5.7.1 that this message is likely unsolicited mail. To reduce the
You have no PTR record for the IPv6 client IP address. Either turn
off IPv6, turn off IPv6 for gmail.com, or get a PTR record.
/etc/postfix/main.cf:
transport_maps = hash:/etc/postfix/transport
/etc/postfix/transport:
gmail.com smtp-ipv4-only
/etc/postfix/master.cf
smtp-ipv4-only .. .. ... ... .. smtp
-o inet_protocols=ipv4
Wietse
