log error

Mar 26 06:47:04 xxx authdaemond: pam_winbind(pop3:auth): pam_winbind_request: write to socket failed!
Mar 26 06:47:04 unimail authdaemond: pam_winbind(pop3:auth): internal module error (retval = 3, user = 'xxxxx')
Mar 26 06:47:04 unimail authdaemond: pam_unix(pop3:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost=  user=xxxxxxxx
Mar 26 06:47:05 unimail authdaemond: pam_winbind(pop3:auth): getting password (0x00000000)