NAME

       Mail::SpamAssassin::Plugin::HeaderEval - Plugin for evaluating header fields.

SYNOPSIS

         use Mail::SpamAssassin::Plugin::HeaderEval;

DESCRIPTION

       The "Mail::SpamAssassin::Plugin::HeaderEval" module provides functionality for evaluating email header
       fields against certain criteria in SpamAssassin.

       check_for_fake_aol_relay_in_rcvd
           Check if a relay present in Received header is a forged AOL header.

       check_illegal_chars
           Check for 8-bit and other illegal characters that should be MIME encoded

       check_for_forged_hotmail_received_headers
           Check for forged Hotmail received headers

       check_for_no_forged_hotmail_received_headers
           Check for semi-forged Hotmail received headers

       check_for_forged_eudoramail_received_headers
           Check for forged Eudora mail received headers

       check_for_forged_yahoo_received_headers
           Check for forged Yahoo received headers

       check_for_forged_juno_received_headers
           Check for forged Juno received headers

       check_for_forged_gmail_received_headers
           Check for forged Gmail received headers

       check_for_matching_env_and_hdr_from
           Check if EnvelopeFrom and From headers match

       sorted_recipients
           Check if recipients are sorted

       similar_recipients
           Check if recipients are similar

       check_for_missing_to_header
           Check if To: header is missing

       subject_is_all_caps
           Check if Subject: header is all uppercase

       check_for_to_in_subject
           Check if To: header value is present in the email Subject

       check_outlook_message_id
           Check if Message-ID header has been generated by Microsoft Outlook

       check_messageid_not_usable
           Check for invalid Message-ID header

       check_invalid_from
           Check if From: address is not valid

       check_invalid_sender
           Check if Sender header address is not valid

       check_invalid_replyto
           Check if Reply-To header address is not valid

perl v5.40.1                                       2025-08-11             Mail::SpamAssas...gin::HeaderEval(3pm)