Question and response
Question
dig mail1.c5mail.net. MX
Answer
mail1.c5mail.net. 3600 MX 0 mail1.c5mail.net.
Authority
c5mail.net. 172800 NS ns-1216.awsdns-24.org.
c5mail.net. 172800 NS ns-1825.awsdns-36.co.uk.
c5mail.net. 172800 NS ns-326.awsdns-40.com.
c5mail.net. 172800 NS ns-836.awsdns-40.net.
Additional
mail1.c5mail.net. 3600 A 46.21.102.216
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0