On 9/23/2012 7:47 PM, Benny Pedersen wrote: > Stephan Bosch skrev den 23-09-2012 19:43: >> This way, the sieve-filter can also be used to filter mail >> on a remote server. > > is it gpl ? The sieve-filter tool is part of Pigeonhole. Both Dovecot and Pigeonhole are mostly LGPLv2.1. Check the COPYING files for details. Regards, Stephan.