Servers: 20 dual 3.x ghz FreeBSD 4.10 RAM: 4GB each Number of Users: 40.000+ daily users, 150.000 regular users, 500.000+ uses it once in a while Authentication: pam/radius Mailboxes sizes: customers get a 500MB mail quota, we use multi terrabyte netapp fileservers. Dovecot version: 1.0 beta4 I think, we cant keep up :) Email client software: anything you can imagine, and then some things you cant imagine.
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?
We use 10 per service. So 10 for webmail's imap backend, and 10 for plain imap. We like to seperate these functionalities. We could probably handle it with 3, but we dont want to try that out :) We prefer to have a lot of overcapacity to handle sudden peaks.
Cor