function preresolve(dq)
    if (dq.qtype == pdns.A or dq.qtype == pdns.AAAA) then
        parent = newDN("zen.spamhaus.org")
        if dq.qname:isPartOf(parent) then
            domain = string.lower(dq.qname:toStringNoDot())
            local subdomain = domain:match("^(.-)%.zen%.spamhaus%.org$")
            local new_query_domain = subdomain .. ".xxxxx.zen.dq.spamhaus.net."
            dq:addAnswer(pdns.CNAME, new_query_domain)
            dq.rcode = 0
            dq.followupFunction = "followCNAMERecords"
            return true
        else
            return false
        end
    end
end