Hello,
I am experiencing IMAP authentication delays when a client first authenticates, or after the last auth timeout. There are only a handful of clients - less than 5 - using the server. I am using a mysql database and I have verified the PAM auth is commented out. Other than that I can't figure out what might be causing the slow authentication. The first time a client authenticates with SSL/CRAMD5 it takes almost 20 seconds. Does anyone have any suggestions? My config and version is below:
mail:~# dovecot --version 1.1.11
mail:/usr/share/gallery2# dovecot -n # 1.1.11: /etc/dovecot/dovecot.conf # OS: Linux 2.6.26-2-686 i686 Debian 5.0.3 ext3 log_timestamp: %Y-%m-%d %H:%M:%S protocols: imap imaps pop3 pop3s login_dir: /var/run/dovecot/login login_executable(default): /usr/lib/dovecot/imap-login login_executable(imap): /usr/lib/dovecot/imap-login login_executable(pop3): /usr/lib/dovecot/pop3-login mail_max_userip_connections(default): 20 mail_max_userip_connections(imap): 20 mail_max_userip_connections(pop3): 10 first_valid_uid: 6060 mail_privileged_group: mail mail_location: maildir:/var/vmail/%d/%n mail_executable(default): /usr/lib/dovecot/imap mail_executable(imap): /usr/lib/dovecot/imap mail_executable(pop3): /usr/lib/dovecot/pop3 mail_plugins(default): autocreate quota imap_quota mail_plugins(imap): autocreate quota imap_quota mail_plugins(pop3): quota mail_plugin_dir(default): /usr/lib/dovecot/modules/imap mail_plugin_dir(imap): /usr/lib/dovecot/modules/imap mail_plugin_dir(pop3): /usr/lib/dovecot/modules/pop3 auth default: mechanisms: plain login cram-md5 passdb: driver: sql args: /etc/dovecot/dovecot-sql.conf passdb: driver: sql