On Fri, 31 Aug 2001, Suresh Ramasubramanian wrote:
> +++ Dr Andrew C Aitchison [exim-users] <31/08/01 11:23 +0100>:
> > Which MUAs talk to port 25 on the local host, rather than running
> > exim themselves ?
>
> Quite a few do. Kmail can talk to localhost:25 / call exim directly, as
> specified.
Which mail clients require that port 25 on the local host to be a
listening SMTP server? (What MUAs don't use command-line "sendmail" to
send mail?)
Over the past few years, I have always actively disabled all the running
SMTP daemons from almost all servers I work with (under a variety of
operating systems). Then I use cron to run the mailq every four hours (or
other). As a management issue, it sure is a lot easier than worrying about
anti-relaying, remotely-exploitable bugs, et cetera (plus it saves a
little resources).
I am particularily interested in knowing what apps require a listening
SMTP server running on the localhost, because on some of my systems I run
my own simple "mailout" as a sendmail replacement. mailout doesn't run as
a daemon and it doesn't listen for any connections. It is used as a
command-line-like tool only; it simply relays the mail to another machine
-- the mailhub -- probably running exim :)
Jeremy C. Reed
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