mailrelay.archerirm.us has no NS records.
NS records for this zone are defined at archerirm.us.
NS records for this zone are defined at archerirm.us.
Question and response
Question
dig mailrelay.archerirm.us. NS
Answer
The response has no answer records.
Authority
archerirm.us. 900 SOA ns-1641.awsdns-13.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0