On Sep 22, 2008, at 5:58 AM, Bob Hoffman wrote: > Received: from 45.45.01.01 (EHLO server.myserverhostname.com) > (45.45.01.01) You should have a PTR record for your IP address that matches the name that the server has configured in the define(`confDOMAIN_NAME', `server.foo.com') line of your .mc file. Then you should have an A record that resolves the domain name "server.foo.com" to the IP address that your server is connecting with. Do this and your email will flow much more smoothly. You should not have to fuss with masquerades just to deliver email for a bunch of Apache virtual host sites. For extra credit you can configure SPF and Domain Keys, but this can have adverse side effects if the virtual host users are not careful about their email client configuration. --Chris