Ok, we updated to dovecot 2.0.9, and we're still seeing the
"net_connect_unix(imap) failed" problem happen around peak login time,
9-10am.
dovecot -n
# 2.0.9: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-71.14.1.el6.x86_64 x86_64 Red Hat Enterprise Linux
Server release 6.0 (Santiago)
auth_master_user_separator = *
auth_mechanisms = plain login
default_client_limit = 5000
default_process_limit = 5000
disable_plaintext_auth = no
mail_fsync = always
mail_gid = 501
mail_location = maildir:~/Maildir:INDEX=/var/indexes/%n
mail_nfs_storage = yes
mail_plugins = quota
mail_uid = 501
passdb {
args = /etc/dovecot/passwd.masterusers
driver = passwd-file
master = yes
pass = yes
}
passdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
plugin {
quota = maildir:User quota
quota_rule = *:storage=200M
}
service anvil {
client_limit = 15000
}
service auth {
client_limit = 32768
unix_listener /var/spool/postfix/private/auth {
group = postfix
mode = 0660
user = postfix
}
user = root
}
service imap-login {
process_min_avail = 12
service_count = 0
}
service pop3-login {
service_count = 0
}
shutdown_clients = no
ssl_cert = </etc/pki/postfix/certs/nexus.pem
ssl_key = </etc/pki/postfix/private/nexus_key.pem
userdb {
args = /etc/dovecot/dovecot-ldap.conf
driver = ldap
}
protocol imap {
mail_plugins = quota imap_quota
}
