How to eliminate Duplicate Emails

[dchristiaan]

Dear Expert,

I've follow the thread at Eliminate Duplicate Emails but still got duplicate mail for some of my users.

I've changed zimbraMessageIdDedupeCacheSize like below,
[zimbra@collosus ~]$ zmprov gacf | grep zimbraMessageIdDedupeCacheSize
zimbraMessageIdDedupeCacheSize: 8192

Anything I can change to solve this duplicate problem since it always disturbing me

This problem cames when some one is a member of a list and somebody send an email to his mail and to the lists he will get 2 same mail on his inbox.

Please your help.

Thanks,
Donny Christiaan.

[dchristiaan]

Please.. somebody can you help me ..

Thanks,
Donny Christiaan.

[phoenix]

The simple answer is that these are not duplicate emails, one message is sent to the user directly and the other is sent to a distribution list and that is forwarded to the users mailbox - they may have the same content but they are initially addressed to different users. Have a look at the headers of both emails, one will have the To: address of the distribution list and the other will have the To: address of the user, both emails will have different Message-ID: and therefore not duplicates.

[dchristiaan]

Hi Bill,

Yes you are right, but sometime zimbra work correctly with sending only one message to the mailbox instead send twice (To user and To distribution-lists) and sometimes zimbra send twice ...

Before using zimbra, I can solve this problem using procmail with my postfix
with .procmailrc file like below

:0 Wh: msgid.lock
| formail -D 32768 procmail.NO_DUPLICATES_MESSAGE_ID_CACHE

Thanks,
Donny Christiaan.