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. |