spf.fence-mail.bsc.fujitsu.com has no MX records.
Question and response
Question
dig spf.fence-mail.bsc.fujitsu.com. MX
Answer
The response has no answer records.
Authority
fujitsu.com. 1200 SOA a3-66.akam.net. hostmaster.akamai.com. 4000003715 3600 900 3600000 1200
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0