[Dovecot] probelm with users logging in

[donovan jeffrey j]

Greetings
 
running dovecot for my first time on an OSX 10.6 server. after a reboot, several users are not able to Authenticate. here is a sample

Oct  5 20:22:32 hsmail dovecot[2142]: auth(default): od(juser,127.0.0.1): auth mech=CRAM-MD5
Oct  5 20:22:32 hsmail dovecot[2142]: auth(default): od(juser,127.0.0.1): username=juser, challenge=<6757250558559635.1286324552 at hsmail.beth.k12.pa.us>, response=26b23b30128bba4f9ba3aca261ec764e
Oct  5 20:22:32 hsmail dovecot[2142]: auth(default): od(juser,127.0.0.1): found user in local table: user=juser
Oct  5 20:22:34 hsmail dovecot[2142]: auth(default): client out: FAIL	41	user=juser
Oct  5 20:22:39 hsmail dovecot[2142]: imap-login: Aborted login (auth failed, 1 attempts): user=<juser>, method=CRAM-MD5, rip=127.0.0.1, lip=127.0.0.1, secured

these users were working fine, then poof no access. 

can someone guide me on how to troubleshoot the dovecot portion. i do have many other users that are fine.

-j