Need advice on large mailing lists

[Andrew Wyllie <wyllie@realbeer.com>]

I am setting up a very large mailing list on a Linux(2.0.0) machine
and I am looking for any advice on what the best way to do this might
be.  The list has approx 50,000 recipients and will be used once
a month to send out a newsletter.  The current solution uses 
majordomo and sendmail.  When a mail is sent out, it kills the machine
(to put it lightly) for a few days which is not accpetable.

The solutions I am looking at include replacing sendmail with zmailer
and useing ProcList (free versions) or SmartList.  We want people to be
able to subscribe and unsubscribe to the list (we will probably also
develop some type of web interface for this).

Any thoughts, bits of wisdom, good/bad experiences would be 
appreciated.


thanks
andrew


.....................................................................
Andrew Wyllie
wyllie@realbeer.com