Server: Dell Power Edge 1850, Xeon CPU 3.20GHz
OS: Debian Sarge, 2.6.14.2
RAM: 2 Gb
Users: 20,000+
Authentication: passwd/pam
Total Maildir Size: 36 Gb
Users Maildir Size: Range of 2Mb to 150Mb.
Dovecot version: 0.99.14
Client Software: sendmail, maildrop, perdition
Configuration:
Edited output of # cat /etc/dovecot/dovecot.conf |grep -v "^#"
protocols = imap pop3 imap_listen = 127.0.0.1:143 pop3_listen = 127.0.0.1:110 login = imap login_process_per_connection = no login = pop3 default_mail_env = maildir:~/Maildir auth = default auth_mechanisms = plain auth_userdb = passwd auth_passdb = pam auth_user = root
Performance:
Load graphs indicating the difference the change from qpopper/mbox to dovecot/maildir made:
