This looks like it could be an apparmor bug instead of dovecot bug, it just happens to manifest itself with dovecot. Adding "apparmor" in "affects".
** Also affects: apparmor (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/997269 Title: dovecot imap broken by apparmor policy To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/997269/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs