>From your log: newaliases: fatal: file /etc/postfix/main.cf: parameter mydomain: bad parameter value: 04.3
This config is broken, it must be a valid domain name. It might have derived it from your hostname as other packages do as well. Please fix the config file, then upgrades will work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1791183 Title: package postfix 3.3.0-1ubuntu0.1 failed to install/upgrade: installed postfix package post-installation script subprocess returned error exit status 75 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1791183/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
