courier question

[Tom Allison <tallison@tacocat.net>]

I was trying to figure out how the use postgresql for authentication, but the 
packages I'm finding get me a little confused.

There is a courier-authpostgresql package in unstable.
There is also a series of courier-imap-xxxx (mysql) package that seem to 
explicity do authentication for imap sessions.

what does the first one do?
aren't they the same?

I mean, wouldn't you just create one authentication process for any 
server/client based access (imap, ssl-imap, pop, ssl-pop) and keep it simple?

My guess is that there are either some package changes taking place, or I'm 
really not understanding what Courier really does.  I thought it was 
essientially a IMAP/POP server (like uw-imap) but with the capabilities of 
virtual hosting by keeping everything in it's own directories (rather than 
/etc/passwd based user directories like uw-imap).

In case you couldn't tell.  I'm trying to migrate from uw-imap because I want 
to do the virtual hosting if possible.  Ideally I would like to use 
postgresql as the backbone for this because I can also use this database as a 
postfix table lookup tool.
--
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