Bug #65934: rcvdist runs afoul of gmail DMARC/DKIM/ARC policies

The recent bug report, Bug #65934: rcvdist runs afoul of gmail DMARC/DKIM/ARC policies, could use some discussion here, I believe.

Here are the contents of the bug (https://savannah.nongnu.org/bugs/?65934):

    I have been using slocal and rcvdist for many years to forward filtered mail to a private gmail address.  But their recent enforcement of DKIM/DMARC policies is causing many (most?) such messages to be bounced, since my SMTP server doesn't match the From: address in the message.  I regard this behavior as a feature of rcvdist, since the incoming message appears to be from the original sender.  But I acknowledge that this use case is not easy to distinguish from spam.

    Is there a workaround here?  Perhaps a switch (or user customization via rcvdistcomps) to allow a modified from line along the lines of "Original Sender <local address>"?  Or is rcvdist no longer the right tool for this purpose?

    Suggestions for alternatives welcome, especially those suitable for a .maildelivery file.

    Thanks. 

Thoughts?

David