Yes and it sounds like you need to setup a smarthost entry and forward the mail to the primary domain The information contained in this message may be confidential or protected from use or disclosure by law. Any distribution, unauthorized use or copying is strictly prohibited. If you have received this message in error please notify the sender and delete the email. Dennis Olson Manager, Network Services 602-778-1911 -----Original Message----- From: John Balos [mailto:jabalos@xxxxxxxxxxxxxx] Sent: Thursday, February 20, 2003 1:24 PM To: [ExchangeList] Subject: [exchangelist] Re: Open Relay - Revisit - http://www.MSExchange.org/ I have my primary domain which is home@xxxxxxxxxxxxxx and then we have a small group of about 10 users who have their own domain. Well, we are now routing they're mail for them on our server. Does that make sense? I don't know if I'm using the right terminology or not. John -----Original Message----- From: Dennis Olson [mailto:Dennis.Olson@xxxxxxxxxxxx] Sent: Thursday, February 20, 2003 11:37 AM To: [ExchangeList] Subject: [exchangelist] Re: Open Relay - Revisit - http://www.MSExchange.org/ Are these domains within the same network. I had a case like that where all mail was being routed to my DC which accidentally had SMTP installed on it. After I stopped SMTP it went down the line to the next. We were able to find that by using network monitor to capture the data. Allow connections from: All except the list below. Allow Relaying for: Only the list below (list blank) Customer has external name resolution with internal DNS servers, but has put External DNS servers in the virtual server. Had customer remove these entries. These were the settings Microsoft had me set to stop the relaying. The information contained in this message may be confidential or protected from use or disclosure by law. Any distribution, unauthorized use or copying is strictly prohibited. If you have received this message in error please notify the sender and delete the email. Dennis Olson Manager, Network Services 602-778-1911 -----Original Message----- From: John Balos [mailto:jabalos@xxxxxxxxxxxxxx] Sent: Thursday, February 20, 2003 12:23 PM To: [ExchangeList] Subject: [exchangelist] Re: Open Relay - Revisit - http://www.MSExchange.org/ Mark, I followed your article and I did a test and found out that I'm an open relay. When I run through the telnet process, I get 250 2.1.5 username@xxxxxxxxxx <mailto:username@xxxxxxxxxx> . I also looked at article 324958 to try and fix the problem and after following this article I still have this problem. I added another connector. One connector has the default settings on there, in the address space tab the box at the bottom is cleared. In the other connector, I have the domain in there that I'm relaying and I have the box at the bottom of the address space tab checked.