city has no MX records.
Question and response
Question
dig city. MX
Answer
The response has no answer records.
Authority
city. 3600 SOA v0n0.nic.city. hostmaster.donuts.email. 1772285308 7200 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0