ns02.socialcode.biz has no MX records.
Question and response
Question
dig ns02.socialcode.biz. MX
Answer
The response has no answer records.
Authority
socialcode.biz. 38400 SOA ns01.socialcode.biz. johan.socialcode.biz. 2016070403 28800 3600 604800 38400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0