search for: duplicatesuppress

...1.2.9, and the sieve plugin for filtering incoming messages into specific folders. The MTA is postfix, and deliver is called using the "mailbox_command = /usr/lib/dovecot/deliver" directive. Is it possible to make dovecot's deliver discard duplicate messages? With cyrus there is a duplicatesuppression directive which works well (http://cyrusimap.web.cmu.edu/imapd/overview.html#duplicate). With procmail, this can be done with the following recipe, but I did not found an equivalent for dovecot: # One often receives duplicate messages for cross-postings to mailing # lists, or explicit replies t...