I discovered today that setting inet_protocols = all
leads gmail to receive mail by ipv6, claim SPF soft fail (presumably because my DNS only specifies ipv4) and so DMARC fail, which causes mail to be classed as spam. Setting inet_protocols = ipv4 fixes the issue. I've never seen a DNS query return an ipv6 address, so this behaviour surprised me. -- Jeff Abrahamson +33 6 24 40 01 57 +44 7920 594 255 http://p27.eu/jeff/ http://mobilitains.fr/
