Hello, I have two web sites. One in another city and one locally behind my firewall(s). I have DNS Servers (outside of the firewall(s)for the local web site and the other city DNS Server is located where the web site is hosted. My problem is, I can send and receive email using the locally hosted domain name, but I cannot send and receive email using the other city domain name. My workstation is behind the ISA firewall and I have more ports open than the City of New York.:) But, something did change this morning. I'm testing the ISA Server in parallel with my currently installed Proxy 2.0 Server and using my workstation to reconfigure and go back and forth. This morning I forgot and left the Proxy 2.0 client on my workstation and when I cut over to the ISA Server my email from the other city domain started working. I thought I didn't need a client on my workstation with ISA. Do I? And why did the Proxy 2.0 client make it start working? Anyway, any help you could give me would be greatly appreciated. Riley Petty Corpus Christi, TX riley@xxxxxxxxxxxxxxxxxx