On Wed, 2007-12-19 at 11:11 -0800, Tom Collins wrote: > Courier-IMAP seems to be putting a heavy load on my server when > someone accesses a mailbox with a large number of messages in it. > > What's the preferred IMAP server for a machine that will have 100-200 > connections (plan for growth...) but may have an occasional mailbox > with 1000+ messages in it. I've searched the archives and tried to > google for "imap server performance" and "imap server comparison" but > haven't come up with much after an hour.
> My impression is that Dovecot performs well, better than courier, but > I'm wondering if anyone can offer up some real-world numbers to help > me make my decision. Dovecot has really come out in the past year or so. I started with .99, I upgraded from Courier, but honestly it wasn't really up to date. Dovecot's indexing showed an immediate improvement on large mailboxes. With 1.0.5, the only issue I have is with a few older Mac clients. For me this affects about 4 out of 450 clients total. I don't have any numbers, but I've had at least 1500 messages in my INBOX, not including subfolders, with great performance. The change was so dramatic I didn't need any numbers. Rick !DSPAM:4769887432008721369393!
