Bug#911614: Module Mail::SPF::BlackMagic should be included

[Yuri D'Elia]

On Tue, Oct 23 2018, Scott Kitterman wrote:
>>I had to install the "spfquery" package to actually debug some domain
>>rules.
>
> There is also an spfquery provided by spf-tools-python.

Thanks for pointing this out, but it doesn't seem to allow tweaking as
much as "spfquery" (from spfquery/libspf2).

I needed basic stuff like "override" (in order to test the rules) and
"max-interactive-terms" to spot some issues in a system with a broken
spf policy that was trying to deliver to my system. It seems that only
spfquery.libspf2 can be used for such purposes.