James Feeney: > inet_interfaces - "The network interface addresses that this mail system > receives mail on." > proxy_interfaces - "The network interface addresses that this mail system > receives mail on by way of a proxy or network address translation unit."
It means to say: inet_interfaces - "Local IP addresses ... proxy_interfaces - "Remote IP addresses ... Instead of setting a listener IP address in master.cf, you should set it with the inet_interfaces parameter. Otherwise, the Postfix SMTP client may run into a mail delivery loop when for some reason a domain name resolves to a local IP address. Wietse