DNSX-520 — Regexps used for query name matching must end with dot
The query names are in dns-proxy unified to the form with ending dot. Thus, regexps in QUERY-NAME lists must respect this dot at the end of the name (i.e. use /cz\.$/ instead of /cz$/).
Although this message is just a warning, you should find incorrect regexps and correct them. Otherwise the matching criteria won't work well.