swift.intern1.dk has no MX records.
Question and response
Question
dig swift.intern1.dk. MX
Answer
The response has no answer records.
Authority
intern1.dk. 900 SOA ns1.pil.dk. hostmaster.pil.dk. 2025022601 14400 7200 2415600 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0