Author: Daniel B <email@example.com>
Date: 2016-05-04 (Wed, 04 May 2016)
Find the karma DB dir (#264)
* Update data_post_headers documentation
We cannot reject at this stage, which is only there to alter headers.
* DMARC plugin: reject in data_post
Followup of #258: we cannot reject a connection during data_post_headers. So add a new hook in data_post to do the real rejection
* Use candidate_dirs to find the DB