I have the following for 1.2. You may search the list archive, I asked that question about halv a year ago and Timo answererd it for both 1.2 and 2.0.

auth default { [...]

Master-Benutzer für Sieve.

Wirkt nur für Sieve, weil es master.imap und master.pop nicht gibt.

passdb passwd-file { master = yes args = DOVECOT_CONFDIR/master.%s # kein pass = yes, weil das bei LDAP-Authentication-Binds nicht geht. } [...] }

And a master.sieve file containing sievemaster:{SHA}......