Removed the currently not needed WHERE clause from the VIEW.
-- ---
-- with Dovecot v1.2.x the service managesieve was renamed to sieve
-- ---
ALTER TABLE users RENAME managesieve TO sieve;
DROP VIEW dovecot_password;
CREATE OR REPLACE VIEW dovecot_password AS
SELECT local_part || '@' || domain_name.domainname AS "user",
passwd AS "password", smtp, pop3, imap, sieve
FROM users
LEFT JOIN domain_name USING (gid);
-- ---
-- Change the user name to the name of your dovecot database user.
-- ---
GRANT SELECT ON dovecot_password TO dovecot;
-- ---^