smtp.setarnet.aw has no MX records.
Question and response
Question
dig smtp.setarnet.aw. MX
Answer
The response has no answer records.
Authority
setarnet.aw. 300 SOA intns.setarnet.aw. hostmaster.setarnet.aw. 2026022301 1800 1800 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0