I am running mandriva 2006 perfect setup. I have added squirelmail as a webmail client by installing the rpm.. I don't know if this is what seemed to break postfix, but I can no longer receive any mail. By this I mean that the mail client (thunderbird, ispconfig webmail, squirrelmail, etc.) always says that there is no mail on the server. This goes for any domain I have setup. I was recieving mail yesterday. All of the correct domains are in the postfix local hosts file and the main.cf is looking there. I can send mail with no problem from any client. Any ideas on where to look?