Works great with all the beta versions. I installed RC1 and get massive authentication failures. auth_debug_passwords = yes auth_master_user_separator=* auth default_with_listener { mechanisms = plain passdb passwd-file { # Master users that can log in as anyone args = /etc/dovecot.masterusers master = yes #pass =yes } passdb passwd-file { # Path for passwd-file args = /etc/vmail/shadow.%d } userdb passwd-file { # Path for passwd-file args = /etc/vmail/passwd.%d } socket listen { master { path = /var/run/dovecot/auth-master mode = 0666 } } } dovecot: Jun 28 07:18:57 Info: auth(default): pam(mark@marxmail.net,64.81.213.137): pam_authenticate() failed: Authentication failure dovecot: Jun 28 07:18:57 Info: auth(default): passwd-file(mark@marxmail.net,64.81.213.137): unknown user dovecot: Jun 28 07:18:57 Info: auth(default): client in: AUTH 6 PLAIN service=IMAP secured lip=69.50.231.8rip=64.81.213.137 resp=AG1hcmtAbWFyeG1haWwubmV0AHlldW4xMjM= dovecot: Jun 28 07:18:57 Info: auth(default): client in: AUTH 8 PLAIN service=IMAP secured lip=69.50.231.8rip=64.81.213.137 resp=AG1hcmtAbWFyeG1haWwubmV0AHlldW4xMjM= dovecot: Jun 28 07:18:57 Info: auth(default): pam(mark@marxmail.net,64.81.213.137): pam_authenticate() failed: Authentication failure dovecot: Jun 28 07:18:57 Info: auth(default): passwd-file(mark@marxmail.net,64.81.213.137): unknown user dovecot: Jun 28 07:18:57 Info: auth(default): pam(mark@marxmail.net,64.81.213.137): pam_authenticate() failed: Authentication failure dovecot: Jun 28 07:18:57 Info: auth(default): passwd-file(mark@marxmail.net,64.81.213.137): unknown user dovecot: Jun 28 07:18:57 Info: pop3-login: Disconnected: user=<elizasue@marksharconsulting.com>, method=PLAIN, rip=71.192.214.3, lip=69.50.231.8, TLS dovecot: Jun 28 07:18:58 Info: pop3-login: Disconnected: rip=70.105.255.245, lip=69.50.231.8 dovecot: Jun 28 07:18:59 Info: auth(default): client out: FAIL 26 user=mark@marxmail.net dovecot: Jun 28 07:18:59 Info: auth(default): client out: FAIL 27 user=mark@marxmail.net dovecot: Jun 28 07:18:59 Info: auth(default): client out: FAIL 7 user=mark@marxmail.net dovecot: Jun 28 07:18:59 Info: auth(default): client out: FAIL 8 user=mark@marxmail.net dovecot: Jun 28 07:18:59 Info: auth(default): client out: FAIL 6 user=mark@marxmail.net dovecot: Jun 28 07:19:04 Info: auth(default): client in: AUTH 28 PLAIN service=IMAP secured lip=69.50.231.8rip=66.100.35.217 dovecot: Jun 28 07:19:04 Info: auth(default): client out: CONT 28 dovecot: Jun 28 07:19:04 Info: auth(default): client in: CONT 28 ADRnZW9yZ2VAdGhlbWlkZGxlYnJvb2tzLm9yZwBnbTU5NjAz dovecot: Jun 28 07:19:04 Info: auth(default): pam(4george@themiddlebrooks.org,66.100.35.217): pam_authenticate() failed: Authentication failure dovecot: Jun 28 07:19:04 Info: auth(default): passwd-file(4george@themiddlebrooks.org,66.100.35.217): unknown user dovecot: Jun 28 07:19:05 Info: auth(default): client out: FAIL 28 user=4george@themiddlebrooks.org dovecot: Jun 28 07:19:05 Info: auth(default): client in: AUTH 29 PLAIN service=IMAP secured lip=69.50.231.8rip=66.100.35.217 resp=ADRnZW9yZ2VAdGhlbWlkZGxlYnJvb2tzLm9yZwBnbTU5NjAz dovecot: Jun 28 07:19:05 Info: auth(default): pam(4george@themiddlebrooks.org,66.100.35.217): pam_authenticate() failed: Authentication failure dovecot: Jun 28 07:19:05 Info: auth(default): passwd-file(4george@themiddlebrooks.org,66.100.35.217): unknown user dovecot: Jun 28 07:19:06 Info: auth(default): client in: AUTH 30 PLAIN service=IMAP secured lip=69.50.231.8rip=63.203.231.61