scanner25.elsa.ccn-cert.net has no MX records.
Question and response
Question
dig scanner25.elsa.ccn-cert.net. MX
Answer
The response has no answer records.
Authority
elsa.ccn-cert.net. 900 SOA ns-1463.awsdns-54.org. elsa.delta90.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0