It turns out my problem was having built the binary first and buggy clean rules. Attached is a sane debdiff that fixes the actual problem this bug is about.
** Attachment added: "Corrected Patch" http://librarian.launchpad.net/5805334/corrected_debdiff -- spfquery: conflict with libmail-spf-query-perl Debian bug#306875 https://launchpad.net/bugs/79683 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs