#94 Post confirmation + moderation

The following scheme (implemented by me for Sympa as a
scenario some time ago) leads to a spam-free
mailing-list with almost no work from the
moderator.

When a mail arrive and should be held for any reason
(sender not in
subscriber list, list not in to: or cc:, too many
recipients), ask the
alleged sender to confirm its post then hold it for
moderation when
the sender confirms its intention to post.

This way, spam (whose confirmation request will almost
never be answered) is not presented to the moderators,
while mail sent by
humans will.

It would be great to have this feature in mailman.

[Lucas Nussbaum]

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Hi,

This feature would really be great to have in mailman.
Additionnally, a web-based confirmation interface could be
added, with an image-based confirmation, to prevent robots
from auto-confirming their posts. Is it planned ? I'm a bit
concerned by the fact that this feature request was posted
more than 3 years ago.

[Lucas Nussbaum]

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Also, this could be implemented in a greylist-like way: the
sender would have to confirm his first post, and then, its
mails would get auto-accepted for a few hours/days.

[James Andrewartha]

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http://viewmtn.angrygoats.net/revision/diff/dfedaca2816739f4f052d21247f6877f5ee39905/with/c6835f6646f467e9a012823b0817e17e152f9811
has an implementation for this, although there's a few other
features mixed into the diff as well.

[Thomas Petazzoni]

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I also really would like to see this feature implemented in Mailman. I'm the mailing list moderator of several lists managed by Mailman, and I'm really bored by all the spam I have to delete from the administrative interface. Of course, I could configure the lists to drop e-mails from non-members, but as some of my lists target a public that doesn't really understand the way mailing lists work, I prefer to keep the solution of moderating valid e-mails by hand.

Having a mechanism where a e-mail would be send to the sender asking for confirmation would be nice. Sympa has this feature for a long time, but I'd really prefer sticking with Mailman, I like it better.

[Barry Warsaw]

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Mailman 2.2 will definitely have this feature in some form or another.