[Novalug] Virtual vs real users and domains when setting up an Email Server

The Doctor drwho@virtadpt.net
Wed Jul 28 12:31:37 EDT 2010


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James Ewing Cottrell 3rd wrote:
> Good article. One slight tweak. The spam assassin, as well as any other
> contol files can't be in the "user"s "home directory", as there are
> (often) no "users". However, the closest thing to a "home directory"
> might be the top level of the mailbox, the one that contains the "new"
> and "cur" directories in a maildir structure. Index files are often
> stored here too.

There is another problem with running SpamAssassin on a shared mail
server: it has to be tuned and trained based upon the mail patterns of
each user to make it work optimally.  The scores for each category often
need to be tweaked a little bit (usually upward) and the trainer should
be run periodically over each user's spam folder to keep it up to date.
 That also means that the users need to go through their junk folders to
move the real messages out before training to keep SA from adding
legitimate messages' characteristics to its recognizer (sorry, mom...)

Past a certain point (in previous lives, about twenty users on a mail
server) it becomes more feasible to let users handle spam sorting on
their side with their mail clients and just put AV filtering in place on
the server as a first line of defense.

- --

The Doctor [412/724/301/703]

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WWW: http://drwho.virtadpt.net/

"Just a moment - my muse is speaking to me." --Citizen G'Kar

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