Instead of blocking a symptom, fix the problem. You need to find out why/who/how some one is sending unauthorized e-mails out of your network/ Could this be virus activity? Could a computer on the LAN being used as a spam relay? John Tolmachoff Engineer/Consultant/Owner eServices For You -----Original Message----- From: Sivaprakasam [mailto:spkrishnan@xxxxxxxxxxxxx] Sent: Friday, June 04, 2004 5:26 AM To: [ISAserver.org Discussion List] Subject: [isalist] SMTP Service blocking http://www.ISAserver.org Hi, I have installed Microsoft ISA 2000 server on Microsoft Windows 2000 Machine. I am able to block particular site in a particular, and able to access pop3 mails via ISA Server. But lot of unwanted mails sent from my system without my knowledge, I would like to block all this unwanted mails sent out from my system. I want to allow only one SMTP IP address to be allowed via ISA. Can anyone help? Thanks ---------------------------- G Sivaprakasam Seven Hills Business Solutions Limited Q1A1,10th Floor, Cyber Towers, Hi-TEC City, Madhapur, Hyderabad, India Voice: +91 (40) 5566 4545 , Ext: 2036 Fax : +91 (40) 5566 2211 ---------------------------------------------------------------------- CONFIDENTIALITY/PROPRIETARY NOTE. The Document accompanying this electronic transmission contains Information from Seven Hills Business Solutions Ltd, which is confidential, proprietary or copyrighted and is intended solely for the use of the individual or entity named on this transmission. If you are not the intended recipient, you are notified that closing, copying distributing or taking any action in reliance on the contents of this information is strictly prohibited. This prohibition includes, without limitation, displaying this transmission or any portion thereof, on any public bulletin board. If you are not the intended recipient of this document ,please return this Document to Seven Hills Business Solutions Ltd --------------------------------------------------------------------- Please Visit us at <http://www.7hillsbiz.com <http://www.7hillsbiz.com/> > --------------------------------------------------------------------- ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: johnlist@xxxxxxxxxxxxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist