bluecatdns.net has no MX records.
Question and response
Question
dig bluecatdns.net. MX
Answer
The response has no answer records.
Authority
bluecatdns.net. 3600 SOA NS73.WORLDNIC.COM. namehost.WORLDNIC.COM. 123081610 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0