From: Ray Dzek (Ray.Dzekspecialized.com)
Date: Fri Sep 01 2006 - 14:10:17 CDT

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postfix-2.1.5-4.2.RHEL4

Dual instances per advosys site.

2 interfaces:
        Eth0 - 10.1.x.x (inside)
        Eth1 - 192.168.x.x (dmz) Default GW is 192.168.x.x

Inbound (1st Postfix Instance), bound to Eth0 (192.168.x.x), gets
filtered with amavisd, SA, Clamav, etc, etc and passed to the exchange
server via Eth0 (10.1.x.x). Inbound works fine.

Outbound is the 2nd Postfix instance bound to the 10.1.x.x. Mail can't
find its way out of the box. I can ssh to the server on the 10.1.x.x
interface and telnet to other servers outside the network, etc. Mail
can be delivered to other servers in the 10.1.x.x space. But any mail
bound for outside the network fails with port 25 timeout. I tried
smtp_bind_address to both interfaces and to no interfaces and nothing
seems to work.

Thanks in advance.

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