_spf01.govhiworks.com has no MX records.
Question and response
Question
dig _spf01.govhiworks.com. MX
Answer
The response has no answer records.
Authority
govhiworks.com. 600 SOA ns.gabia.co.kr. hosting.gabia.com. 2018091916 1800 600 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0