Register with Abuse.net and run a test on your server to see if it configured properly. The site is http://www.abuse.net/register.html The test site is at http://www.abuse.net/relay.html Cheers, Alex. Alejandro Contreras Systems Administrator Ontario College of Teachers 121 Bloor St. East, Floor 6 Toronto, ON. M4W 3M5 Tel. (416) 961-8800 x269 Fax: (416) 961-8822 acontreras@xxxxxxxxx -----Original Message----- From: Holstrom, Don [mailto:DHolstrom@xxxxxxx] Sent: Tuesday, December 31, 2002 11:31 AM To: [ExchangeList] Subject: [exchangelist] How do I check to make sure no one is using my site as a relay po int? http://www.MSExchange.org/ I am getting an inordinate amount of inbound mail failures with crazy addresses and crazy subject lines. ------------------------------------------------------ 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 ------------------------------------------------------ ISA Server Resource Site: http://www.isaserver.org Windows Security Resource Site: http://www.windowsecurity.com/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this MSExchange.org Discussion List as: acontreras@xxxxxxxxx To unsubscribe send a blank email to $subst('Email.Unsub')