snarfies wrote:
doveconf: Fatal: Error in configuration file /etc/dovecot/dovecot.conf: protocols: Unknown protocol: sieve
In Debian 6, sieve protocol is included in "dovecot-common" package. In Debian 7, there is a dedicated package called "dovecot-sieve", so maybe "apt-get dist-upgrade" didn't install the new package and just replaced "dovecot-common" with "dovecot-core" (which lacks sieve protocol).
In short,
apt-get install dovecot-sieve