tbz4.loudclick.net has no MX records.
Question and response
Question
dig tbz4.loudclick.net. MX
Answer
The response has no answer records.
Authority
loudclick.net. 1800 SOA ivan.ns.cloudflare.com. dns.cloudflare.com. 2398551583 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0