Thanks Mark, Has anyone here used the Open Relay Filter from Vamsoft with Exchange 2000 behind ISA? If so, what was your experience with it? Thanks, Kelli Ms. Kelli Mariah Irwin Applied Performance Technologies -----Original Message----- From: Mark Fugatt [mailto:mark@xxxxxxxxx] Sent: Monday, March 22, 2004 10:31 AM To: [ExchangeList] Subject: [exchangelist] RE: Reverse DNS Lookup http://www.MSExchange.org/ Not without a third-party solution, you could take a look at MailEssentials from www.gfi.com or the Open Relay Filter from http://www.vamsoft.com/orf/ Mark Fugatt MCSE, MCT, Microsoft Exchange MVP Pentech Office Solutions Inc Rochester, NY Tel: 585 586 3890 Cell: 585 576 4750 http://www.4mcts.com http://www.exchangetrainer.com -----Original Message----- From: Kelli Irwin [mailto:kelli@xxxxxxxxxxxxxxxxxxxxxx] Sent: Monday, March 22, 2004 10:29 AM To: [ExchangeList] Subject: [exchangelist] Reverse DNS Lookup http://www.MSExchange.org/ Hi All, Is it possible to set up Exchange 2000 to perform reverse DNS lookups AND reject any email that fails? If so, how? Thanks, Kelli ------------------------------------------------------ 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 ------------------------------------------------------ ------------------------------------------------------ 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 ------------------------------------------------------