Just to clarify my understanding:
On a server with two network interfaces, the first interface has one public IP,
the seconds interface has one private (192.168.x.x) IP.
inet_interfaces = all
inet_protocols = all
#smtp_bind_address =
#smtp_bind_address6 =
With the following configuration it binds as such
tcp 0 0 0.0.0.0:25 0.0.0.0:* LISTEN 21067/master
tcp6 0 0 :::25 :::* LISTEN 21067/master
The docs say
when inet_interfaces specifies no more than one IPv4 address, and that
address is a non-loopback address, it is automatically used as the
smtp_bind_address
Is the second interface with the private IP being considered? With the above
config is there a risk of postfix trying to use the 192.168.x.x (or IPv6
equivalent) for outbound connections? Should the bind addresses be specified
when using a private network on second interface?
