spf-b.telia.se has no MX records.
Question and response
Question
dig spf-b.telia.se. MX
Answer
The response has no answer records.
Authority
telia.se. 3600 SOA nsmaster.telia.se. hostmaster.telia.se. 2026022008 420 300 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0