[Mailman-Developers] Fixing DMARC problems with .invalid munge

[Bob Puff]

> Exactly how to patch this depends on what Mailman version you're
> starting with, but you basically want some code like this.
> 
>     name, addrs = parseaddr(msg.get('from'))
>     addrs += '.invalid'
>     del msg['from']
>     msg['From'] = formataddr((name, addrs))
> 
> If you put it in Mailman/Handlers/Cleanse.py or
> Mailman/Handlers/CookHeaders.py, parseaddr and formataddr are already
> imported from email.Utils so the above 4 lines added to the
> process(mlist, msg, msgdata) function are all you need.
> 

(Including your other email)

Right, I have a few highly-customized MM installs, and need to do this by hand
- can't just install the latest and greatest.

Thanks, I'll start testing now.

Bob