Op 13-1-2016 om 10:55 schreef Hajo Locke: > Hello, > > try to upgrade my dovecot 2.2.18 installation from sieve 0.4.6 to > newest sieve 0.4.11 > I got this error at packaging: That will not work. You need to upgrade Dovecot to the latest version as well if you want to use that version. Regards, Stephan.