dovecot - Feb 2010 - Dovecot and duplicates

Hi

I'm having a problem setting up duplicate filtering on my mail server. 
I've set up the mail server with Postfix and Dovecot with virtual LDAP 
users, ClamAV virus scanning. The problem is that some of the virtual 
users use multiple e-mail addresses and postfix delivers emails sent to 
a user as many times as the user has email address entries in LDAP. I 
was wondering what would be the smartest way to get rid of these 
duplicates, they have identical message ID:s and a simple procmail 
recipe does the trick, however as I'm using dovecots deliver, procmail 
isn't the answer.  Is it possible to use Sieve to do this, I've been 
googling around *a lot* and haven't found anything that would solve the 
problem...

This is the procmail recipe that succesfully eliminates the duplicates:

MAILDIR=/var/vmail

:0 Wh: msgid.lock
| formail -D 8192 .msgid.cache

Or could another solution be to configure postfix to first receive the 
email, then let procmail do the duplicate filtering, then ClamAV does 
the virus scan and finally dovecots deliver delivers the message to the 
virtual user's mailbox?

Any help will be greatly appreciated =)

Wexi

-- 
* Veikko "Wexi" Skurnik: +358(44)5288338 *
*  wexi at wexin.net           Wexi at IRCNet  *
*   N?ytt?m?nkatu 4 B 12 33720 Tampere   *
*   "Kosminen balanssi ei saa j?rkky?"   *

On 10.2.2010 1:54, Gabriel Millerd wrote:
>
>
> On Wed, Feb 10, 2010 at 5:14 AM, Veikko "Wexi" Skurnik <wexi
at wexin.net
> <mailto:wexi at wexin.net>> wrote:
>
>
>     I'm having a problem setting up duplicate filtering on my mail
>     server. I've set up the mail server with Postfix and Dovecot with
>     virtual LDAP users, ClamAV virus scanning. The problem is that
>     some of the virtual users use multiple e-mail addresses and
>     postfix delivers emails sent to a user as many times as the user
>     has email address entries in LDAP. I was wondering what would be
>     the smartest way to get rid of these duplicates, they have
>     identical message ID:s and a simple procmail recipe does the
>     trick, however as I'm using dovecots deliver, procmail isn't
the
>     answer.  Is it possible to use Sieve to do this, I've been
>     googling around *a lot* and haven't found anything that would
>     solve the problem...
>
>
> i would assume that there is a postfix mechanism for consolidating 
> these once it has normalized / expanded the rcpts for the message.
>
>
> -- 
> Gabriel Millerd
I've been trying to figure this out and no luck... I still think that 
one possibility could be a Sieve script that would discard messages 
based on a message-ID cache like the procmail recipe does. Does 
dovecot's deliver have some sort of message-ID cache that could be used 
to removed the duplicates? Or if anyone has any ideas how to do this, 
I'm open to suggestions =)

Wexi

-- 
* Veikko "Wexi" Skurnik: +358(44)5288338 *
*  wexi at wexin.net           Wexi at IRCNet  *
*   N?ytt?m?nkatu 4 B 12 33720 Tampere   *
*   "Kosminen balanssi ei saa j?rkky?"   *