Parsing and handling of the Authentication-Results header.
See the comment on
handle_authres for more.
- Use the parsed authres and the authservid candidates to compute whether DKIM passed and whether a keychange should be allowed.
- Whether DKIM in emails from this domain should be considered to work.
authresis short for the Authentication-Results header, defined in https://datatracker.ietf.org/doc/html/rfc8601, which contains info about whether DKIM and SPF passed.
- Parses a single Authentication-Results header, like:
- The headers can contain comments that look like this:
- About authserv-ids