spf.eu.uu.net has no MX records.
Question and response
Question
dig spf.eu.uu.net. MX
Answer
The response has no answer records.
Authority
eu.uu.net. 21600 SOA auth200.ns.uu.net. hostmaster.UU.NET. 2025101500 7200 3600 2419200 21600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0