[Mailman-Users] best MTA to use with mailman?

[lee.bolding at ukonline.co.uk]

wanted your opinions on the best MTA to use with 
mailman.

by "best" I mean fastest, issues of setting up 
etc are not a problem.

At the moment I'm using sendmail that comes with 
FreeBSD, although sendmail is robust it lacks 
some features, and is actually quite slow.

I've used postfix before, its quick and has the 
ability to use an LDAP directory for its aliases 
DB - which makes creating lists so much easier, 
especially via web.

Does anybody have any other MTAs to suggest? and 
what are the reasons that these MTAs are "good"?

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