You enabled the SMTP service on the OS or the 5.5 application (IMS?) This setting is possible, but if it accepts mail for your internet connection it's not recommended. Can you provide some more details? _____ From: NGUYEN HONG HA [mailto:HANH.EVNIT@xxxxxxxxxx] Sent: Thursday, March 25, 2004 8:59 PM 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 ------------------------------------------------------