[Spam-discuss] tmda & mailing lists

[Ward Vandewege]

Hi,

I am working to implement TMDA with a mailing list server, in this case 
Mailman. We have the following kind of setup for e-mail aimed at a mailing 
list: SpamAssassin -> TMDA -> Mailman -> local/external delivery. We use Exim.

SpamAssassin tags spam as such, and TMDA, for the mailinglists, will ask 
confirmation for any message tagged as Spam. This works just fine.

The problem we're having occurs with the local delivery, during which we also 
want to give users the opportunity to run their e-mail through TMDA, and thus 
have extra rules/whitelists/blacklists. We have a working setup for this too, 
but when local subcribers' rules are more strict than the global rules, and ask 
for a confirmation, potentially there will be a lot of confirmation requests 
sent to the list owner (or, in the case of expansion of an alias file, to the 
sender of the message). We don't want that.

Ideally, TMDA would send out 1 confirmation request for the message (preferably 
with a from address that is not based on the requesting user's, but on the 
list/alias address) as soon as one of the members asks for it. TMDA would then 
continue to deliver the message as normal to all members of the list that don't 
require confirmation, and freeze the message for the ones that do. If a 
confirmation comes in, TMDA would deliver the mail to the remaining members.

I guess you could call this 'hierarchical confirmation of messages', where a 
confirmation for one listmember would approve the message automatically for 
anyone receiving the message, systemwide.

I guess what we want is a mailing list aware of TMDA. Is there a way to do this 
with TMDA as it exists now? If not, does anyone have ideas on how to go about 
this? 

Bye for now,
Ward.

--
No group of professionals meets except to conspire against the public at
large. -- Mark Twain

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