Thanks for taking the time to submit this bug. In the DpkgTerminalLog, I see:
Starting Postfix Mail Transport Agent postfix [80G postfix: warning: valid_hostname: invalid character 40(decimal): (none) postfix: fatal: unable to use my own hostname What do you see when you do each of the following? cat /etc/mailname cat /etc/hostname hostname hostname --fqdn ** Changed in: postfix (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to postfix in Ubuntu. https://bugs.launchpad.net/bugs/808653 Title: package postfix 2.8.2-1ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/808653/+subscriptions -- 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