Hi David, You could use TZO and use a dynamic address to host a mail server. I've done this several times. There are some problems with this approach becuase of how some places handle spam control, but it does work. HTH, Tom Thomas W Shinder www.isaserver.org/shinder ISA Server and Beyond: http://tinyurl.com/1jq1 Configuring ISA Server: http://tinyurl.com/1llp -----Original Message----- From: David V. Dellanno [mailto:ddellanno@xxxxxxxxxx] Sent: Saturday, June 21, 2003 8:08 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISA http://www.ISAserver.org Hi Moshood, To host your Exchange Server, you need one static public IP address, also you should have created on your external DNS Server, A-Record points to your static public IP address & MX record. -----Original Message----- From: MOSHOOD ARE [mailto:aremoshood@xxxxxxxxx] Sent: Saturday, June 21, 2003 8:43 AM To: [ISAserver.org Discussion List] Subject: [isalist] RE: ISA http://www.ISAserver.org Thanks Dave, I will check this out. How many public IP addresses do I need on the external network card on the ISA saver. Right now I have just one , that is the one on My MX RECORD. Hope to hear from you. Moshood Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. ------------------------------------------------------ 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: 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: tshinder@xxxxxxxxxxxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')