Patching advice?

[Benjamin Donnachie]

Benjamin Donnachie wrote:
> I prefer the solution of patching cyrus, rather than modifying the
> message before it is delivered, so that cyrus duplicate detection
> continues to work.

Bron Gondwana has kindly advised me that Cyrus duplicate detection works
on the Message-Id header, so it's back to plan A and writing a "before
Cyrus" filter instead.

Huge thank yous to Bron! :-)

Ben