Sahil Tandon wrote:
Is there a Mailman way to activate, in the context of delivery, the same duplicate suppression that occurs when archiving?
No. The archiver has intimate knowledge of message-ids because they are used in message threading so it knows when a message has a duplicate message-id. Note that it doesn't actually ignore the duplicate. It creates an nnnnnn.html archive file containing the message and it adds it to the cumulative .mbox file and (I think, I haven't checked) the periodic .txt file; it just doesn't link to it from any of the index files.
If not, I will have to do this based on Message-IDs on input at the MTA, but I would prefer to do it via the mailing list manager if this is already possible.
It would be possible to implement a per-list database of processed message-ids with a custom handler very early in the pipeline, and discard duplicates there. See <http://wiki.list.org/x/l4A9>.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan