Hey, i added after i installed ispconfig an ipv6 address to the system, now i try to see if the ipv6 can send mails. So i changed inet_protocol to ipv6, but now this error shown: Code: /etc/postfix/master.cf: line 138: bad hostname or network address: 127.0.0.1:10025
All parts of the services connect to localhost which is IP 127.0.0.1 which is IPv4, so if you disable it, the services will fail.
Ok, i redoo it to all, and i send 2 mails to gmail (own address) and one of them had the ipv6 in the head. so it works