Okay, I know it has been a while since this thread has been posted to, but I wanted to let you guys know that I have resolved the postfix issue on my Debian install. I finally figured a little more about DNS and what needed to be changed. strec.com was just a local domain that I was using for the server so I could setup the LAN. I didn't realize that it had to be a registered internet domain until falko and till pointed it out. Lessons learned for me... Since strec.com was up for sale for $900, I couldn't exactly justify the purchase so I simply registered another domain on the internet and used it to update the host files, etc... Now postfix works great and the emails are coming and going... This has left me with one issue--how do I update all of the files that still have strec.com listed? There is a large amount that contain it per rgrep strec command. So many that I don't even know where to start... I updated everything as I knew how to in the "Perfect Setup" for Debian 3.1 (ie. host files, and postfix). Are all of these 'other' files that contain strec generated by the ISPConfig install? If so, how can I efficiently and safely update them. I have not seen any problems yet, but I'm sure I will before too long. I can list some of the found files if necessary.