Hi there, Thank you for taking the time to report bugs and trying to make Ubuntu Server better.
According to the information you have provided, it seems that the reason why it failed to upgrade is because one of the parameters in the config file does not take multiple values: newaliases: fatal: myorigin parameter setting must not contain multiple values: P.E. Wigboldus So, this means that you would have to change the parameter accordingly as it only takes one single value. Once you change it, you should be able to do the following to complete the installation: sudo dpkg --configure -a Please, let us know how it goes. Cheers, ** 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/763923 Title: package postfix 2.8.2-1ubuntu1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 75 -- 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