[Dovecot] Re-applying Sieve rules on existing messages

Hi,

I saw this hack on the Internet once but now that I need it, can't
find it anymore. Does anybody know how to trick Dovecot LDA/Sieve into filtering mail
that has already been stored into a folder?

Thanks in advance ;)

-- Tomasz K. Jarzynka / +48 601 706 601 / tomee(a-t)genesilico(d-o-t)pl Laboratory of Bioinformatics and Protein Engineering | www.genesilico.pl International Institute of Molecular and Cell Biology | www.iimcb.gov.pl