mailu/dovecot/conf/dovecot-sql.conf.ext

driver = sqlite
connect = /data/freeposte.db

# Return the user hashed password
password_query = \
 SELECT password \
   FROM user INNER JOIN domain ON user.domain_id = domain.id \
  WHERE domain.name = '%d' \
    AND user.username = '%n'

# Mostly get the user quota
user_query = \
 SELECT '*:bytes=' || user.quota_bytes AS quota_rule \
   FROM user INNER JOIN domain ON user.domain_id = domain.id \
  WHERE domain.name = '%d' \
    AND user.username = '%n'