func answerSOA(q *dns.Question, e *DNSEntry) dns.RR {
answer := new(dns.SOA)
answer.Header().Name = q.Name
answer.Header().Rrtype = dns.TypeSOA
answer.Header().Class = dns.ClassINET
answer.Ns = strings.TrimSuffix(e.Meta["ns"], ".") + "."
answer.Mbox = strings.TrimSuffix(e.Meta["mbox"], ".") + "."
answer.Serial = uint32(time.Now().Unix())
answer.Refresh = uint32(60) // only used for master->slave timing
answer.Retry = uint32(60) // only used for master->slave timing
answer.Expire = uint32(60) // only used for master->slave timing
answer.Minttl = uint32(60) // how long caching resolvers should cache a miss (NXDOMAIN status)
return answer
}