Database changes: The query db_sql_select_user used to return $(user_ref). Now it returns two values: $(user_ref) and $(message_ref), in that order. The variable $(user_ref) cannot be used in db_sql_*_target* queries any more. Use $(message_ref) instead. Now $(user_ref) can only be used in the new query db_sql_check_user, which is issued after all other outgoing message queries. The variable $(ip) can now be used for outgoing messages as well. The new variable $(rcpt_count) can be used for outgoing message queries. Other config file change: New option: blocked_user_list. It is loosely related with db_sql_check_user; that is, one can define neither, either, or both. See zdkimfilter.conf(5). Enhanced dkimsign command: New command line options --filter and --db-filter, for using stdin/stdout; the second also provides for logging, quite like SMTP submit, including the block/ check user_list thing. The argument following --domain can now take the full authenticated email address.