some messages sent are not archived

Hi,
I am a new Mailman user.
Last night, I sent a messages to the mailing list but it didn't seem to work.
This morning I sent another one and it didn't seem to work either.
None of the messages were in the archive.
Therefore, I changed the privacy options, sender filters. The member_moderation_action was in "Discard" and I changed it to "Hold".
I sent the message again and I could see it at "Tend to pending moderator requests". I accepted it and it was sent.
However, it seems that subscribers have received the three messages, even though, in the archive, there's only one message and not the other three. Can anyone tell me why this happen and how to avoid itin the future?
Thank you in advance,
Regards,
Fernando.

On 12/6/2012 1:51 AM, Fernando Pérez Cos wrote:
Presumably, all the messages were posts from a moderated member and the first two were discarded and the third held per member_moderation_action. The held and approved post was archived and delivered, and the other posts were discarded and not archived.
Everything seems OK except you say that the discarded and not archived posts were delivered to list members. I don't know how Mailman could have done this. Can you post the complete headers from one of the posts as received by a list member?
What's in Mailman's 'vette' and 'post' logs?
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan

On 12/6/2012 1:51 AM, Fernando Pérez Cos wrote:
Presumably, all the messages were posts from a moderated member and the first two were discarded and the third held per member_moderation_action. The held and approved post was archived and delivered, and the other posts were discarded and not archived.
Everything seems OK except you say that the discarded and not archived posts were delivered to list members. I don't know how Mailman could have done this. Can you post the complete headers from one of the posts as received by a list member?
What's in Mailman's 'vette' and 'post' logs?
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan
participants (2)
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Fernando Pérez Cos
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Mark Sapiro