Hi,
I got the error message in /var/adm/syslog as below
May 27 16:38:41 scolpn popper[18838]: vmail at 22-5-68-200.ptr.tic.cl (200.68.5.22): -ERR [AUTH] Password supplied for "vmail" is incor...
http://www.experts-exchange.com/Security/Operating_Systems_Security/Unix/Q_24442172.html