Hi Gillian, Good to hear you got it working! 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: Gillian Cook [mailto:gcook@xxxxxxx] Sent: Wednesday, April 30, 2003 12:21 PM To: [ISAserver.org Discussion List] Subject: [isalist] RE: Back to back DMZ Exchange and SMTP relay http://www.ISAserver.org Great news! Based on Tom's suggestion that it "might be a problem with the Server Publishing Rule on the internal ISA Server", I went ahead and deleted the rule - client sets and protocol rules, restarted the ISA server, created the server publishing rule again with the secure mail publishing wizard and it's working fine. This fixed the Internet to internal mail flow. Outbound from internal network to Internet had been working. The odd thing is I had done this step before, without restarting the server - and it didn't work. Oh well... The great news is it's working! Thanks to all, especially Tom, for all of your help and input. Very much appreciated! Gillian