slackbuilds_ponce/python/python3-authheaders

Python module for generating email authentication headers:
Authheaders can generate both authentication results header fields
and DKIM/ ARC sighatures.

It can perform DKIM, SPF, and DMARC validation, and the results are
packaged into a single Authentication-Results header.

It can also DKIM and ARC sign messages and output the corresponding
signature header fields.