hmm. did you uninstalled postfix sometime ago? try to install it again.
sudo apt-get install postfix after that try upgrading again. This is probably not a bug, so i'm closing it. If the previous tip didn't help don't hesitate in reopening or BETTER yet, ask at the forums for support. -- Update Manager and apt-get fails https://bugs.launchpad.net/bugs/155601 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs