dovecot - Sep 2017 - migrate courier to dovecot and forward mail like maildrop does it

Hi there,

I was wondering what's the way to go if I want to migrate my 
courier/maildrop setup to dovecot/sieve?
Is it even possible or do I need something else?

The approach of using maildrop with postfix just hit the fan because I'm 
to dumb to configure it :(

so with maildrop I have a .mailfilter file with

cc "!some_email at some_domain.tld"

and this just works like a charm with courier and maildrop but whats the 
equivalent in dovecote and the sieve plugin ?

regards

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