On Wed, 2011-09-28 at 18:21 +0530, 0 wrote:
In general, listening only on localhost is done for security reasons.
It
looks like sendmail binds only to 127.0.0.1:25
$ sudo lsof -i :25 -n
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
sendmail 5333 root 4u IPv4 654974 0t0 TCP 127.0.0.1:smtp
(LISTEN)