Hello, postfix usually listen on both protocols if main.cf contain "inet_protocols = all" and myhostname is setup properly. May I expect that also for smtp-sink?
$ host mail.example.com mail.example.com has address 192.0.2.25 mail.example.com has IPv6 address 2001:db8::25 $ smtp-sink inet:mail.example.com:25 & now I've only a listener on 2001:db8::25 but not on 192.0.2.25, but I would like smtp-sink listen on ipv4 AND ipv6. is that possible? Andreas
