Quanah Gibson-Mount: > In Postfix > 3.0.x, the value from postconf mynetworks returns incorrect > netmask values, and it is missing IPv6 entirely:
This depends on the inet_protocols setting. # postconf inet_protocols=all # postconf mynetworks mynetworks = 127.0.0.1/32 192.168.122.1/32 168.100.189.7/32 [::1]/128 [fe80::223:55ff:fe5c:3985]/128 # postconf inet_protocols=ipv4 # postconf mynetworks mynetworks = 127.0.0.1/32 192.168.122.1/32 168.100.189.7/32 # postconf inet_protocols=ipv6 # postconf mynetworks mynetworks = [::1]/128 [fe80::223:55ff:fe5c:3985]/128 Wietse