VMM/mailbox: Decode error messages from doveadm.
Those errors occur only with the dbox mailbox format when the
mailbox.folders contains non-ASCII mailbox names.
..|curr_vers_rel_date|replace:: The most current version of vmm is 0.6.1, released on 03 October 2012...|rel_hist|replace:: Older releases are listed in the :doc:`release_history`.