Hi,
we are providing Mail-Service (POP3, IMAP; either TLS or SSL) to 22000 students here at my university.
There are 2 machines running as active-passive cluster with DRBD to sync the maildata. Each box is a 4 core Intel(R) Xeon(R) CPU 5160 @ 3.00GHz with 8 gigs RAM.
After a tuneup for DRBD and upgrade to dovecot 1.1 average load is around 1.0.
HTH Philipp
Impressive !
You'll be my contact for next few months :)
How many Megabyte does the datamail size ? (total and per user?)
Have you tune your conf file following this link : http://wiki.dovecot.org/PerformanceTuning ?
Do you have Mail data or index on a NFS server (NAS) ? Actually that the point of interest, we would like to take advantage of our NAS because it manages so well automatic snapshot and incremental backup that would be a really good security for data mail users. Does anybody have such IMAP architecture ?
PS : awesome mailing list... so reactive !