The Firewalls, if you will, are just Linksys DSL routers on both ends. NAT and port closure are what they are doing. They are setup the same on both connections.
I can telnet and open port 25 on their exchange server from mine but not my workstation. Thanks for help guys... Subject: RE: I can't send to a particular customer... But they.. From: "Ramsden, Mark" <[EMAIL PROTECTED]> Date: Mon, 7 Jan 2002 15:41:18 -0000 X-Message-Number: 26 Doug - what firewall are you using, and what firewall are they using. We had a similar situation between a customer using Raptor Firewall and our Netscreen Firewall. Turned out it was nothing to do with exchange but was a setting on our firewall List Charter and FAQ at: http://www.sunbelt-software.com/exchange_list_charter.htm
