Hi. I'm using dovecot 2.0.18 and I'm trying to authenticate through a CAS server (until now authentication was through MS Active Directory). I could not find anywhere some examples, so here is what i have done so far. -install phpcas and pam_cas -edit /etc/pam.d/dovecot auth    sufficient      /lib/security/pam_cas.so -simap://webmail.mydomain.com -f /etc/pam_cas.conf -edit /etc.pam_cas.conf host mycas.mydomain.com port 443 uriValidate /cas/proxyValidate ssl on proxy ??????????????????????? trusted_ca /etc/cert/certificate.pem debug on

• and finally dovecot.conf which I'm sure is complety wrong userdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } passdb { driver = pam args = cache_key=%u dovecot }

What I get in log is

Oct 15 15:39:58 auth-worker: Debug: Loading modules from directory: /usr/lib64/dovecot/auth Oct 15 15:39:58 auth-worker: Debug: Module loaded: /usr/lib64/dovecot/auth/libauthdb_ldap.so Oct 15 15:39:58 auth-worker: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_mysql.so Oct 15 15:39:58 auth-worker: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_pgsql.so Oct 15 15:39:58 auth-worker: Debug: Module loaded: /usr/lib64/dovecot/auth/libdriver_sqlite.so Oct 15 15:39:58 auth-worker: Debug: Module loaded: /usr/lib64/dovecot/auth/libmech_gssapi.so Oct 15 15:39:58 auth-worker: Debug: pam(user,127.0.0.1): lookup service=dovecot Oct 15 15:39:58 auth-worker: Debug: pam(user,127.0.0.1): #1/1 style=1 msg=Password: Oct 15 15:39:58 auth-worker: Info: pam(user,127.0.0.1): pam_authenticate() failed: Permission denied Oct 15 15:40:00 auth: Debug: client out: FAIL    1    user=user Oct 15 15:40:00 imap-login: Info: Aborted login (auth failed, 1 attempts): user=<user>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, secured Oct 15 15:40:00 auth: Debug: auth client connected (pid=9019)

Any ideas? Thanks.