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 , but please note that the Ubuntu release you are running (14.10 Utopic Unicorn) reached its end of life in 2015 and is not supported anymore.
Since we use this bug tracker to track bugs in Ubuntu rather than configuration problems, and since the report is against an unsupported release of Ubuntu, I'm marking this bug as Invalid. 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: dovecot (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/1404879 Title: package dovecot-core 1:2.2.9-1ubuntu5 failed to install/upgrade: Unknown setting: managesieve_max_line_length To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dovecot/+bug/1404879/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
