[Dovecot] Duplicate Elimination

Steffen Kaiser skdovecot at smail.inf.fh-brs.de
Wed Feb 24 16:15:39 EET 2010


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On Wed, 24 Feb 2010, Aravind Divakaran wrote:

> Actually as i told there were two groups i have created in my mailserver
> which contain a common emailid.
> For example
>
> group1: user1 at example.com,user2 at example.com
> group2: user1 at example.com,user3 at example.com
>
> If i am sending a mail to group1 and group2. It is going two times a
> single mail to the user1 mailbox. But in dovecot it is not eliminating
> since it has the same message-id. Previously i was able to accomplish this
> task with cyrus duplicate elimination.

"two times a single mail to the user1 mailbox"
actually I do expect that the MTA detects the duplication of the two 
aliases and does NOT send the mail two times to user1.

I mean what happens if you alias like so:

group1: user1,group2
group2: user1,group1

unless the MTA removes duplicates, you've created a mail storm.

Are they "real" MTA-level aliases or are they driven by a mailing list 
software? Or is one recipient of groupX forwards to an external recipient, 
then that one forwards back to user1?

Regards,

- -- 
Steffen Kaiser
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