You don't need to put extra work on your firewall. DNS is the way to go. If you don't control your DNS point the domains I mentioned earlier into your servers host file to the null address of 127.0.0.1 JK -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Jeremy Lee Sent: Tuesday, June 29, 2004 10:17 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: blocking yahoo messenger And this http://www.experts-exchange.com/Security/Firewalls/Q_20610865.html <http://www.experts-exchange.com/Security/Firewalls/Q_20610865.html> _____ From: Stephen Taylor (Mitel Admin) [mailto:STaylor@xxxxxxxxxxxxxxxxxxxxxxxxxxxx] Sent: Tuesday, June 29, 2004 9:14 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: blocking yahoo messenger Try this http://help.yahoo.com/help/us/mesg/use/use-17.html <http://help.yahoo.com/help/us/mesg/use/use-17.html> Stephen -----Original Message----- From: Robinson, Nick [mailto:NRobinson@xxxxxxxxxxxxxxxx] Sent: 29 June 2004 15:07 To: thin@xxxxxxxxxxxxx Subject: [THIN] blocking yahoo messenger Can someone tell me how to block Yahoo Messenger? I thought I had the thing blocked but was told people are still using it. Nick