Daniel Watts wrote:
Could you guys discuss the differences in your setup? Obviously the question here is why does Cor use 20 servers for 500,000 users when Grant needs 3 servers (same cpu, LESS ram) for 350,000 users?
One thing I noticed is that Grant has an average of 1.7MB usage per user indicating a lot of inactive users amoung the 350,000. 50,000 active? Cor has around 200,000 active/regular users.
In anycase - both of you beat the hell out of my UW IMAP server: Dual 3.0 GHz Xeon 4GB Ram SCSI 10,000rpm RAID 5 ( 3 x 144GB) 3000 active users, 5000 squirrelmail webmail sessions per day Quotas ranging from 50MB to 1000MB. About 100GB of mail stored total. Load up to 10 sometimes! Reading in those big MBOX files is hard work.
This is why I'm investigating moving to Dovecot =)
Can I suggest we create a wiki page for these? It would be GREAT to have an archive of registered working production setups. This way Dovecot admins can browse for a similar system and perhaps contact someone who has a similar setup and can help them.
I've created a page at: http://wiki.dovecot.org/DovecotServerInstallations
Accessible from the Odds and Ends section of the front page.
I've put up a sample server config (actually borrowed from Dennis but with all personal details removed for privacy!). If you guys fancy copying your individual server details to that page we could build up a really nice list of working installations.
Best wishes, Daniel
For what it's worth when I switched from UW-IMAP to Dovecot it was like I died and went to heaven. It was as big of a relief as going from Sendmail to Exim.