On Mon, 1 Aug 2022 at 23:07, <post...@ptld.com> wrote: > > 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?
Hi, Does your Private address 192.168.x.x have a default gateway as well? Rgds/DP
