Alternatives to Sendmail

[David Kramer]

I'm setting up a new server, and thinking of replacing sendmail.  The two
alternatives seem to be qmail and postfix.  Unfortunately, I couldn't make
the last meeting about postfix.

So I have two questions:  Can anyone list reasons why I should use one
over the other?  They both seem more seucre and faster than sendmail.

The other question is, can I install either of these apps without breaking
sendmail?  If I stop sendmail and start up one of these apps then think
better of it, can I just stop that app and start sendmail again?  Or will
there be file clashes, etc.

Thanks.

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DDDD   David Kramer                           http://thekramers.net
DK KD
DKK D  "No poor bastard ever won a war by dying for his country.
DK KD  He won it by making other bastards die for their country."
DDDD                            -General George Smith Patton (WWII)