Centos6 (2.x)
/etc/dovecot/dovecot.conf
dovecot.conf
# use minimal protocols
# protocols = imap pop3 lmtp
protocols = imap pop3
# only ipv4 :: mean all ipv6 ip's
# listen = *, ::
listen = *
/etc/dovecot/conf.d .. 10-auth.conf
10-auth.conf
# dovecot 1.x default is "no"
disable_plaintext_auth = no
# use username h-imaoka@example.jp = <h-imaoka>
auth_username_format = %n
# keep it
auth_mechanisms = plain
auth-system.conf.ext
auth-system.conf.ext
passdb {
driver = pam
# [session=yes] [setcred=yes] [failure_show_msg=yes] [max_requests=<n>]
# [cache_key=<key>] [<service name>]
#args = dovecot
args = login
}
args = login means /etc/pam.d/login
10-mail.conf
10-mail.conf
# There are a few special variables you can use, eg.:
#
# %u - username
# %n - user part in user@domain, same as %u if there's no domain
# %d - domain part in user@domain, empty if there's no domain
# %h - home directory
#
# See doc/wiki/Variables.txt for full list. Some examples:
#
# mail_location = maildir:~/Maildir
# mail_location = mbox:~/mail:INBOX=/var/mail/%u
# mail_location = mbox:/var/mail/%d/%1n/%n:INDEX=/var/indexes/%d/%1n/%n
mail_location = mbox:~/mail:INBOX=/var/mail/%u
mail_access_groups = mail
10-ssl.conf (optional)
10-ssl.conf
# SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
ssl = no
trouble shooting
can not start daemon (protocol error)
set listen port = * (ipv4 only)
pam auth failure (locked account)
use login pam auth.
clear failure count
pam_tally2 --user=<user name> --reset
corrent failure count
pam_tally2 --user=<user name>
login succeeded but disconnected from server
confirm mail_location setting