I ended up manually de-installing our locally made dovecot package (also numbered 1.2.12), and then everything worked fine.
The version from proposed works as expected, thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/685590 Title: dovecot 1.2.9 not compatible with thunderbird -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs