[Mailman-Developers] Rewriting the Subject:

Hi all,

I've installed my reverting DKIM verifier. Today it failed on a specific message which I also received directly. The reason it failed is the Subject: field was rewritten like so:

ORIGINAL: Subject: RE: [dmarc-ietf] A policy for direct mail flows only, was ARC questions

REWRITTEN: Subject: Re: [dmarc-ietf] A policy for direct mail flows only, was ARC questions

The message is tagged X-Mailman-Version: 2.1.29. Is it Mailman doing that change? I found some code which may seem to be doing something like that in CookHeaders.py:

 rematch = re.match(
                    '(\s*(RE|AW|SV|VS)\s*(\[\d+\])?\s*:\s*)+',
                     subject, re.I)
 if rematch:
     subject = subject[rematch.end():]
     recolon = 'Re:'

It seems I have to save the subject if it matches that string, correct?

Best Ale