[Dovecot] Lifetime of redirect info stored by Sieve in .dovecot.lda-dupes

[Stephan Bosch]

Axel Luttgens schreef op 8-5-2014 14:22:
> Le 8 mai 2014 à 13:14, Stephan Bosch a écrit :
>> Axel Luttgens schreef op 8-5-2014 11:29:
>>> How long are the Message-ID and recipient of forwarded messages (thru the redirect action) kept in .dovecot.lda-dupes?
>>>
>>> According to the code, it could be 24 hours; am I right?
>> Yes. Why are you asking?
> I'm asking because I've been questioned this morning about following scenario.
>
> Let's say one has a "redirect only" mailbox, having address "triplet at example.com" and a sieve script similar to this one:
>
> 	redirect "user1 at example.com";
> 	redirect "user2 at example.com";
> 	redirect "user3 at example.com";
> 	discard;
>
> When retrieving his messages with his MUA, user1 notices a message that should have been sent to user99.
> He thus decides to forward that message to user99, and puts triplet at example.com in the Cc: field so as to inform the other users (user2 and user3) that they don't need to bother about that message anymore.
>
> So, you sure guess what happened (for my part, I had to look in the log): no redirect action succeeded for the informative message, since its Message-ID was the same as the original one ("discarded duplicate forward to ...").

Ehmm, what mail client is doing this? :)

Afaik, forwarding messages should have a new Message-ID. I've tested 
this with Thunderbird and it does that properly.

Regards,

Stephan.