Hi guys, Just installed a new server with FC3. I kept my old mail config files. I have put them in their place and mail (spam ) started coming in. I have one problem that I cannot send emails through my own mail server. The error is "Domain of sender address user@xxxxxxxxxxxx does not exist". I have a lot of hits when searching on this error but none give me proper handles to check and fix things. Thanks for the help. Jeroen