Master user and non-plaintext auth does not work

1 Sep 2014


      Hi,
I want to use CRAM-MD5 or DIGEST-MD5 (non-plaintext) authentication
for master users, but Dovecot 2.2.13 rejects it with the following log:
Sep  1 06:18:08 localhost dovecot: auth: passwd-file(masteruser,10.0.1.20,master,): Master user logging in as u0001
Sep  1 06:18:08 localhost dovecot: auth: cram-md5(u0001@example.jp,10.0.1.20,): password mismatch
Sep  1 06:18:10 localhost dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=u0001@example.jp, method=CRAM-MD5, rip=10.0.1.20, lip=10.0.103.100, secured, session=
PLAIN and LOGIN are OK:
Sep  1 06:20:34 localhost dovecot: auth: passwd-file(masteruser,10.0.1.20,master,<SpwmAPsBgwAKAAEU>): Master user logging in as u0001
Sep  1 06:20:34 localhost dovecot: imap-login: Login: user=u0001@example.jp, method=PLAIN, rip=10.0.1.20, lip=10.0.103.100, mpid=23743, secured, session=<SpwmAPsBgwAKAAEU>
Sep  1 06:20:34 localhost dovecot: imap(u0001@example.jp): SpwmAPsBgwAKAAEU: Connection closed in=13 out=663
I have the following configuration in my dovecot.conf:
auth_mechanisms = plain login cram-md5 digest-md5
disable_plaintext_auth = yes
auth_master_user_separator = %
passdb {
driver = passwd-file
args = /etc/dovecot/passwd.masterusers
master = yes
pass = yes
}
# don't work too
#passdb {
#  driver = checkpassword
#  args = /opt/osstech/etc/dovecot/checkpassword.masterusers
#  master = yes
#  pass = yes
#}
passdb {
driver = ldap
args = /etc/dovecot/dovecot-ldap.conf.ext
}
Is this a bug or a restriction of Dovecot?
--
-- Name: SATOH Fumiyasu @ OSS Technology Corp. (fumiyas @ osstech co jp)
-- Business Home: http://www.OSSTech.co.jp/
-- GitHub Home: https://GitHub.com/fumiyas/
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