Hi, I gave a secondary mx with 2 ipv4 and 2 ipv6 ip's. I have dns'd one of each protocol for mx and ns Trying to get postfix to play nice with mx on outbound. hostname, mynetworks etc all setup right. I have tried smtp_bind_address(6) but for some reason, although it uses the correct IP, the relays are denied for spf failure on the main server, even though they are all permitted in spf RR, ok, evident by fact that if I remove the option, it works again, I even downed that IP on the box, and it relayed fine (yeah go figure) so, moved on to inet_interfaces included 127.0.0.1 ipv4 and ipv6 addresses for mx, but this uses the wrong ipv4 address when connecting
So, what is the preferred method for assigning the outbound IP ? Thought about master.cf, but that will require an entry for ipv4 and another separate for ipv6 from my reading of docs, which seems kinda silly given sliding respources between the two protocols. Thanks