Hi,

I'm using (or trying to at least) a combination of PAM/passwd and MySQL authentication:

auth vmail { mechanisms = plain userdb = sql /etc/dovecot/dovecot-sql.conf passdb = sql /etc/dovecot/dovecot-sql.conf user = root }

auth system { mechanisms = plain userdb = passwd passdb = pam imap user = root }

MySQL authentication works without problems but authentication real (system) users dosn't:

Feb 13 02:05:57 coredump dovecot: auth(vmail): sql(alj,127.0.0.1): query: SELECT crypt AS password FROM passwd WHERE id = 'al j' Feb 13 02:05:57 coredump dovecot: auth(vmail): sql(alj,127.0.0.1): unknown user Feb 13 02:05:57 coredump dovecot: auth(system): userdb(alj,127.0.0.1): uid=10000 gid=1000 home=/home/alj mail= Feb 13 02:05:57 coredump dovecot: imap-login: Login: alj [127.0.0.1] Feb 13 02:05:57 coredump dovecot: auth(system): userdb(alj,127.0.0.1): uid=10000 gid=1000 home=/home/alj mail= Feb 13 02:05:57 coredump dovecot: imap-login: Login: alj [127.0.0.1] Feb 13 02:05:57 coredump dovecot: auth(system): userdb(alj,127.0.0.1): uid=10000 gid=1000 home=/home/alj mail= Feb 13 02:05:57 coredump dovecot: imap-login: Login: alj [127.0.0.1] Feb 13 02:05:57 coredump dovecot: auth(system): userdb(alj,127.0.0.1): uid=10000 gid=1000 home=/home/alj mail= Feb 13 02:05:57 coredump dovecot: imap-login: Login: alj [127.0.0.1] Feb 13 02:05:57 coredump dovecot: auth(vmail): file auth-client-connection.c: line 31 (auth_client_send): assertion failed: (conn->refcount > 1) Feb 13 02:05:57 coredump dovecot: auth(system): userdb(alj,127.0.0.1): uid=10000 gid=1000 home=/home/alj mail= Feb 13 02:05:57 coredump dovecot: imap-login: Login: alj [127.0.0.1] Feb 13 02:05:57 coredump dovecot: child 22359 (auth) killed with signal 6 Feb 13 02:05:58 coredump dovecot: auth(vmail): mysql: Connected to (null) (vmail)

After a few logins authentication stops working and dovecot needs to be restarted.

It seems that the mysql dovecot-auth crashes if the MySQL query does not return anything but only if it is combined with the PAM authentication.

-- Allan Joergensen - http://nowhere.dk/ "I believe my plan has a fatal flaw." -- The Brain