This looks like someone is sending syslogs from a TACACS (dial-in/remote user authentication protocol) server to your Imail server.
Block syslog (514/UDP) from getting to your box from the outside or see who else in your organization is trying to log to your box. Sandy Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
