mail server

[azeem ahmad]

>From: "Welty, Richard" <richard.welty at bankofamerica.com>
>Reply-To: For users of Fedora Core releases <fedora-list at redhat.com>
>To: For users of Fedora Core releases <fedora-list at redhat.com>
>Subject: RE: mail server
>Date: Wed, 14 Dec 2005 10:00:26 -0500
>
>azeem ahmad writes:
> > i have never configured it. i m a student not a sys admin. n i have to
> > configure a mail server that must meet enterprise requirements.
> > its mine assignment. thats why i was asking about qmail and sendmail
>
>from a performance point of view, any of the "big 4" Mail transports
>can provide enterprise quality service. in fact, all 4 of them are used
>in this manner in one place or another. high volume mail transport is
>inevitably disk bound, cpu speed/count and choice of MTA are less important
>than you might think.
>
>sendmail is the ancestral MTA. it used to be a lot harder to configure
>than it is now, but it's still no walk in the park. licensing is derived
>from the BSD family of licenses.
>
>exim is a spiritual decendant of smail (no common code though.) it's
>monolithic in construction (which fans of qmail/postfix hate), but has
>been pretty free of security advisories over the years. i have used it
>for 10 years now, and don't feel any compelling reason to move on from it.
>it works well. it is designed to be fairly easy to install in place
>of a sendmail installation, although the configuration files are different.
>licensing is GPL.
>
>qmail is its own creature. it works hard at not being sendmail, makes a
>number of unique decisions, and is heavily modularized for security 
>purposes.
>some of the unique decisions are controversial (e.g., massive parallel
>delivery when only one destination host is involved.) licensing is most
>assuredly _not_ open source.
>
>postfix is modularized too, but maintains a useful degree of sendmail
>compatibility. postfix users seem to like it a lot (i've never used or
>learned it.) licensing is a complex ibm specific license that's sort of
>open source. it'd be really nice if ibm would bag this license and put
>postfix under the GPL or something.
>
thanx a lot list
u provided me with great piece of information

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