I recently setup a machine as mail server running Fedora. The interesting thing is I don't have any of the masq'ing options enabled. However, I have another linux machine that sends mail out as root@xxxxxxxxxxxxxxxxxxxxx and when it passes through the Fedora box its rewriting the domain from localhost.localdomain to the hostname.domain of the Fedora box. Has anyone saw this and know why? I'm confused since all the masq'ing options are commented out and the cf file recreated. TIA. Dave