On Mon, Feb 22, 2010 at 11:20:05AM -0500, Beyer, Clay wrote:
We are setting up a Debian web server and would like to use Mailman to manage a couple of mailing lists that we control. After some initial complications with Mailman and Postfix we decided to uninstall and reinstall everything, before we get going again, I just wanted to get an idea of what the best mail program, taken from the Mailman Documentation, to use with Mailman... Postfix, Qmail, Exim, or Sendmail.
I strongly recommend against qmail, as it is not suitable for professional or even amateur use.
I have deployed the rest in various environments numerous times. None is "best" across the board, but each may be "best" depending on your environment, your needs, and your mail system knowledge. Roughly, and I emphasize ROUGHLY speaking:
- exim is the simplest to install and configure. If your needs
are straightforward and modest, this might be the best choice.
- postfix is not as simple, but it *is* modular, well-designed,
and quite capable of supporting complex environments.
- sendmail is still more complex, but is widely known (in part
because of its longevity) and there is a larger knowledge base
for it than any other MTA. Sendmail milters offer an extensive
feature set for sufficiently-advanced administrators.Personally, I tend to use sendmail and postfix -- in part because I'm usually dealing with non-straightforward environments. However, I would advise that if you think can manage with exim, you should at least try.
Without having detailed knowledge of the factors above (environment, needs, knowledge) it's tough to say much further than that, but: if you're only handling mail for one domain, if you're only handling mailing list traffic, if you're not running an associated POP/IMAP server, if you're running a single server, if you're handling low to moderate volumes of traffic, then my guess would be that exim will work very well for you.
---Rsk