1 Server Dell 2950 2 Intel(R) Xeon(R) CPU E5420 @ 2.50GHz
Os Slackware 13.1
Ram 8gb
Users ~ 40000
Auth: passwd/shadow
Maildir size: ranging from few Kbs to about 5 Gbs
Dovecot version: 1.0.7
Webmail Client Software: Own made by www.mesi.com.ar team.
Filesystem ext3 with 32k folders fix using 7 depth levels /var/spool/mail/012345/0/1/2/3/4/5/6