Hello,
http://wiki2.dovecot.org/ACL says, I can do that with a post-login script (http://wiki2.dovecot.org/PostLoginScripting).I have verified, that the script is running, and that ACL_GROUPS is correct.That code was missing one part that v2.0 requires (updated now): export USERDB_KEYS="$USERDB_KEYS acl_groups"
Thank you very much, that fixed my Problem. Micha Krause
