How does one force sendmail to use only a single interface

[richard.pieri-Re5JQEeQqe8AvxtiuMwx3w at public.gmane.org (Richard Pieri)]

On May 2, 2010, at 12:06 PM, Jerry Feldman wrote:
> 
> We added a new IP address to the BLU server in anticipation of migrating
> to a new range of IP addresses, but that address is causing some ISPs to
> reject us. I don't want to disable the interface, but is there a way we
> can force sendmail to bind itself only to eth0, not eth1.

Probably, but my first thought would be to use an iptables rule to block port 25 traffic on the undesired interface.

--Rich P.