Log Message:
2.10.3          2015/05/12
        LIBOPENDKIM: Make strict header checking non-destructive.
                The last change to this code resulted in failing signatures.

2.10.2          2015/05/10
        Fix bug #221: Report a DKIM result of "policy" if MinimumKeyBits
                or UnprotectedKey cause the signature to result in a "pass"
                override.
        Fix bug #227: Revert removal of SenderHeaders configuration setting.
                Document that it is now limited to signature selection.
        LIBOPENDKIM: Fix bug #226: Deal with header fields that are
                wrapped before there's any content.
        CONTRIB: Update to contrib/systemd/opendkim.service.in