Thanks for the bug report. Please can you check the value for myorigin in: /etc/postfix/main.cf
Log Extract: Running newaliases newaliases: fatal: myorigin parameter setting must not contain multiple values: Yiorgis P. Christou Thanks. ** Changed in: postfix (Ubuntu) Status: New => Incomplete ** Changed in: postfix (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/856027 Title: package postfix 2.8.2-1ubuntu2.1 failed to install/upgrade: η υποδιεργασία installed post-installation script επέστρεψε κατάσταση λάθους 75 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/postfix/+bug/856027/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs