Thank you for your report. This looks like a local configuration problem, rather than a bug in Ubuntu.
You can find pointers to get help for this sort of problem here: http://www.ubuntu.com/support/community It appears that you have invalid hostname: PostconfMydomain: 04 PostconfMyhostname: eML16.04 Also see, https://askubuntu.com/questions/691903/error-during-running-newaliases http://www.postfix.org/postconf.5.html#myhostname https://en.wikipedia.org/wiki/Hostname#Restrictions_on_valid_host_names Since we use this bug tracker to track bugs in Ubuntu, rather than configuration problems, I'm marking this bug as Invalid. This helps us to focus on fixing bugs in Ubuntu. If you believe that this is really a bug, then you may find it helpful to read "How to report bugs effectively" http://www.chiark.greenend.org.uk/~sgtatham/bugs.html. We'd be grateful if you would then provide a more complete description of the problem, explain why you believe this is a bug in Ubuntu rather than a problem specific to your system, and then change the bug status back to New. ** Changed in: postfix (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1567961 Title: package postfix 3.0.4-5build1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/1567961/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
