Hi guys. Would like to request fr assistance. I have a mail server running Centos 6 and had configure Kolab and postfix. the linux box has been running well for some time. recently, i noted that several users can no longer log into their mail accounts. I have tried resetting user passwords in kolab webadmin but to no avail. I went on to try create new user accounts, and can only log into the newly created user accounts on Kolab webadmin. should i try to log in using outlook, same issue of authenticating passwords appears. a quick look into user mailboxes reveals that no mailboxes of the new users are being created. belowis what im getting from #kolab lm ================================================================ File "/usr/sbin/kolab", line 39, in <module> kolab = Cli() File "/usr/lib/python2.6/site-packages/pykolab/cli/__init__.py", line 69, in __init__ commands.execute('_'.join(to_execute)) File "/usr/lib/python2.6/site-packages/pykolab/cli/commands.py", line 138, in execute commands[cmd_name]['function'](conf.cli_args, kw) File "/usr/lib/python2.6/site-packages/pykolab/cli/cmd_list_mailboxes.py", line 82, in execute imap.connect() File "/usr/lib/python2.6/site-packages/pykolab/imap/__init__.py", line 169, in connect self._imap[hostname].login(admin_login, admin_password) File "/usr/lib/python2.6/site-packages/pykolab/imap/cyrus.py", line 135, in login cyruslib.CYRUS.login(self, *args, **kw) File "/usr/lib/python2.6/site-packages/cyruslib.py", line 415, in login self.__doexception("LOGIN", error) File "/usr/lib/python2.6/site-packages/cyruslib.py", line 358, in __doexception self.__doraise( function.upper(), msg ) File "/usr/lib/python2.6/site-packages/cyruslib.py", line 367, in __doraise raise CYRUSError( idError, mode, msg ) cyruslib.CYRUSError: (10, 'LOGIN', 'authentication failure') ================================================================ Funny thing is that some users are sending and receiving their emails while some have this authentication problem. All are connected to the same server Any ideas???