NFN Smith wrote:

...

Exactly. When cron/gate_news polls the news group and posts messages to the Mailman list, it puts a fromusenet flag in the message's metadata. The ToUsenet handler looks for this flag and will not process the message if it is present.

OK, that makes sense.

Any idea why fromusenet is getting ignored (or perhaps, never being created)?

I don't think that's what's happening at all. I think a more likely scenario is, as Brad suggested in his reply, that the original is posted to the newsgroup with a copy to the Mailman list. Thus, there are really two copies of the post, one to the news group which gets gated to the Mailman list and one to the Mailman list which gets gated to the news group. Do the 'duplicates' appear on both the Mailman list and the news group? Note that even if two copies are sent to the list members, the post may only appear once in the archive on the Mailman side if the two had the same message id.

I can't be sure that this is what's happening, but it would help to see the full headers from both posts on the news group and from however many copies of the post are in Mailman's archives/private/list.mbos/list.mbox file.

-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan