gc1.fastandsecure.net has no MX records.
Question and response
Question
dig gc1.fastandsecure.net. MX
Answer
The response has no answer records.
Authority
fastandsecure.net. 600 SOA pdns11.domaincontrol.com. dns.jomax.net. 2025071206 28800 7200 604800 600
Additional
. 0 OPT ; payload 1280, xrcode 0, version 0, flags 0