_spflbc4.mailprofiler.com has no MX records.
Question and response
Question
dig _spflbc4.mailprofiler.com. MX
Answer
The response has no answer records.
Authority
mailprofiler.com. 3600 SOA ns1.mailprofiler.ch. postmaster.mailprofiler.ch. 2505260002 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0