#kubuntu #xubuntu #postfix reconfigure if you want to reconfigure your ed/k/x/ubuntu postfix install try # dpkg-reconfigure postfix see also https://help.ubuntu.com/10.04/serverguide/postfix.html https://help.ubuntu.com/community/Postfix https://help.ubuntu.com/community/PostfixBasicSetupHowto configure install mail postfix ubuntu