Even if it could be configured to do that (which it can not) that would mean absolutely nothing. I can easily say the message that I send is FROM you. It is called forging the from address. EXTREMELY common among SPAM. John Tolmachoff Engineer/Consultant/Owner eServices For You > -----Original Message----- > From: Stephen Herrera [mailto:sherrera@xxxxxxxxxx] > Sent: Friday, November 28, 2003 11:27 AM > To: [ExchangeList] > Subject: [exchangelist] Relaying > > http://www.MSExchange.org/ > > I had Relaying not allowed on my Exchange 2k Server and this broke one of > our web apps that sends out email invitations to meetings hosted by our > web server. I put to allow relaying from that web server in my SMTP > connector. Now the invitations can go out but I was wondering if there is > a way to restrict it so that I can only go out if they have our domain in > them. In other words only relay from that server if it has *@mycompany.com > as the email address. As it stands right now any domain from that server > can relay email out. > > Steve > > > ------------------------------------------------------ > 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 > ------------------------------------------------------