spf_office.tdc.dk has no MX records.
Question and response
Question
dig spf_office.tdc.dk. MX
Answer
The response has no answer records.
Authority
tdc.dk. 3600 SOA ns-a.eurodns.com. hostmaster.eurodns.com. 2026022500 43200 7200 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0