[ILUG] Sending email across a LAN

[Conor Daly]

On Wed, May 28, 2008 at 08:51:06PM +0100 or so it is rumoured hereabouts, 
Timothy Murphy thought:
> Surely there must be something I can put in sendmail.mc
> to say, in effect, "send any email addressed to
> a user in the local domain directly to the machine specified"?
 
There is but I'm so far from using sendmail that I have no clue what it
is.

> I notice that
> -----------------------------------------
> [tim at helen ~]$ telnet alfred smtp
> Trying 192.168.2.1...
> telnet: connect to address 192.168.2.1: Connection refused
> telnet: Unable to connect to remote host: Connection refused
> -----------------------------------------
> fails.
> Why is this?
> Could I open port 25 to incoming packets?

Two possibilities:

1. Your firewall is blocking port 25

2. alfred's sendmail is accepting email only on the loopback interface.
This is the default behaviour for sendmail on Fedora.  You need to look in
/etc/mail/sendmail.mc and comment out the line:

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')dnl

which restricts incoming mail to the loopback interface only.

Conor

-- 
Conor Daly <conor.daly at cod.homelinux.org>
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