Mail::MIMEDefang::Authres - Authentication Results interface for
MIMEDefang

Mail::MIMEDefang::Authres is a module used to add Authentication Results
headers from mimedefang-filter.

md_authres
    Returns a mail Authentication-Results header value. The method
    accepts the following parameters:

    $email
        The email address of the sender

    $relayip
        The relay ip address

    $serverdomain
        The domain name of the server where MIMEDefang is running on