Quinn Comendant wrote:
On Tue, 23 Jan 2007 02:30:34 +0300, Alexey Loukianov wrote:
I'm not sure procmail will be able to filter out such "almost dupes", but in any case James will be forced to modify each user separately to filter out dupes, which is not the easiest thing to deploy and administer.
The "formail -D" trick works because it uses the Message-ID, which is added 
(usually) by the originating mail program. I did a quick test: I created two test email 
lists, each with the two same subscribers. I sent an email to both lists (CCed). The user 
with the formail -D config received only one copy of the mailings, and the user with no 
procmail received both mailings.

Is there any case when mailing list or MTA software will change the Message-ID 
of an email?

Not sure on this. Need to reread RFCs to tell more.
In any case - as it works for you, it should work for anybody else using the same setup. The only trouble for this method I see then is the relatively difficult deployment and administration (i.e. we are adding another point for possible failures, and it will be harder for us to check up why the hell user complaints about the loss of important message ;-D).

--
Best regards,
Alexey Loukianov                          mailto:[EMAIL PROTECTED]
System Engineer,
IT Department,
Lavtech Corp.

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