Maildir vs mbox

[Fraser Campbell <fraser@starnix.com>]

Hi,

I have a client who is using a sendmail system with uw-imap.  They are having
fairly serious performance problems ... load rarely goes below 2, ssh login
takes about 20 seconds (this is a P3 500).

The CPU hog seems to be imapd.  Some users have very large mail folders
(Sent-items particularly), when users with huge folders connect the CPU usage
on their imapd process is 99%.

I am thinking of upgrading them to postfix to take advantage of the maildir
storage format.  Is the performance of imap likely to increase when using
maildir ... I plan to use courier-imap.

Any experiences or suggestions appreciated!

Thanks,

Fraser