test.py

# totest is simply the output of `grep -lr "DKIM-Signature" . > ../totest`
# pretty naive for the most part, don't have much time to put to this tonight unfortunately. 
# you can grab the archive from https://file.wikileaks.org/file/podesta-emails/podesta-emails.mbox-2016-11-06.gz
# and split it into individual eml files.

import dkim # this is dkimpy

emls = open('totest', 'r').read().splitlines()

for eml in emls:
    d = dkim.DKIM(open('out/{}'.format(eml)).read())
    try:
        res = d.verify()
    except Exception as e:
        print("EML failed, {}: {}".format(eml, e))