According to your log file, main.cf has an error: newaliases: fatal: file /etc/postfix/main.cf: parameter myhostname: bad parameter value: vork.hsd1.co.comcast.net. , could you try to delete the final dot in your fully domain and then try to reinstall postfix? Thanks!
** Changed in: postfix (Ubuntu) Status: New => Incomplete -- package postfix 2.6.5-3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75 https://bugs.launchpad.net/bugs/530814 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to postfix in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs