In Connection tab of the SMTP properties, you can define IP address of SMTP connection. Malinda Perera. _____ From: NGUYEN HONG HA [mailto:HANH.EVNIT@xxxxxxxxxx] Sent: Friday, March 26, 2004 07:59 To: [ExchangeList] Subject: [exchangelist] Exchange5.5 SMTP Connection http://www.MSExchange.org/ I have an MSExchange 5.5 on a Windows 2K server. I enable SMTP service on this server. Can I only accept SMTP connection from some host (base on IP or name) and deny all SMTP connection from others ? If yes, how can do it ? Thanks in advance. Ha. ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: Leading Network Software Directory: http://www.serverfiles.com No.1 ISA Server Resource Site: http://www.isaserver.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 ------------------------------------------------------