I am getting "user unknown" when trying to connect to the dovecot server using IMAP. The client gets an authentication failed message and does not download mail.
The host system uses shadow passwords in /etc/shadow. I would like to use the same passwords for IMAP sessions, so I have set the passdb driver to shadow.
The system is Slackware, which does not use PAM.
Here is the dovecot version and configuration output:
# dovecot -n # 2.1.17: /usr/local/etc/dovecot/dovecot.conf # OS: Linux 3.6.5 i686 Slackware 13.1.0 auth_debug_passwords = yes auth_verbose = yes namespace inbox { inbox = yes location = mailbox Drafts { special_use = \Drafts } mailbox Junk { special_use = \Junk } mailbox Sent { special_use = \Sent } mailbox "Sent Messages" { special_use = \Sent } mailbox Trash { special_use = \Trash } prefix = } passdb { args = blocking=no driver = shadow } service auth { unix_listener auth-userdb { user = root } } ssl_cert =
Here are the dovecot auth_passwd_debug level log messages when the client tries to connect:
May 2 09:05:07 harlie dovecot: auth: Debug: Loading modules from directory: /usr/local/lib/dovecot/auth May 2 09:05:07 harlie dovecot: auth: Debug: auth client connected (pid=22181) May 2 09:05:07 harlie dovecot: auth: Debug: client in: AUTH^I1^IPLAIN^Iservice=imap^Isecured^Isession=ABCDEFGHIJKLMNOP^Ilip=96.229.223.7^Irip=10.0.0.181^Ilport=993^Irport=51898^Iresp=zxywvutsrqponmlkji== May 2 09:05:07 harlie dovecot: auth: Debug: shadow(john,10.0.0.181,<ABCDEFGHIJKLMNOP>): lookup May 2 09:05:07 harlie dovecot: auth: shadow(john,10.0.0.181,<ABCDEFGHIJKLMNOP>): unknown user May 2 09:05:09 harlie dovecot: auth: Debug: client passdb out: FAIL^I1^Iuser=john May 2 09:05:09 harlie dovecot: imap-login: Disconnected (auth failed, 1 attempts in 2 secs): user=<john>, method=PLAIN, rip=10.0.0.181, lip=96.229.223.7, TLS, session=<ABCDEFGHIJKLMNOP>
The user john is a real account on the host machine and has entries in both /etc/passwd and /etc/shadow.
Help?
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john@idsfa.net John Stimson http://www.idsfa.net/~john/ HMC Physics '94