Mailserver, IMAP daemon and MySQL?

[humbletech99]

Hi,
I've got an old mail server which is running Exim as MTA and imapd for the IMAP server.

I've noticed some appalling performance for a user who has a very large inbox and lots of mails in both inbox and folders.

The problem is that the mails are stored in a flat file structure which just doesn't scale and I want to replace this with a MySQL backend which should be very fast since MySQL is a nippy database.

I'd like some recommendations about how to do this and what server software I should run. I think Exim can do putting into the MySQL bit, but I'd still need an IMAP daemon to supply to client workstations... Or is there a better way?

All suggestions welcome...
_________________
The Human Equation:

value(geeks) > value(mundanes)

[Ateo]

Courier-IMAP is a fine specimen. It can perform DB lookups and probably share the same DB with your Exim setup. You would need to convert to .maildir mailbox style for Courier-IMAP however.

[indynet]