Howto make exim not listen on port inet 25

[Jose Marin <jose@ma.hw.ac.uk>]

Hi all,

A home user typically receives e-mail with a pop program (fetchmail), and
therefore he has no use for his MTA _listening_ for incoming mail on inet
port 25, am I right?  Because I assume fetchmail passes its load on to the
MTA via the local interface, 127.0.0.1, isn't it so? 

Therefore it seems reasonable to have an MTA configured to _not_ listen on
the ppp0 interface, while still having the stmp transport enabled for
outgoing mail through ppp0 or any other interface besides lo.  Can I do
this with exim?  I've looked but I really couldn't find anything... help! 

Yes, I know I could firewall incoming traffic for port 25, but first I'm
looking for a simple config for exim, if it exists.  Would I have more
luck with postfix instead?


Jose

PS: Is there any inetd replacement which can listen selectively on the
various interfaces?  Maybe this could be a solution for having both exim
and leafnode not listening on the inet ports for home users, what do you
think??? 

-- 
Jose L Marin                                jose@ma.hw.ac.uk
Dept of Mathematics                         marin@posta.unizar.es
Heriot-Watt University
Edinburgh EH14 4AS, U.K.
Phone: +44 131 451 3717
Fax: +44 131 451 3249