spf.domains-robot.com has no MX records.
Question and response
Question
dig spf.domains-robot.com. MX
Answer
The response has no answer records.
Authority
domains-robot.com. 3600 SOA ns.udag.de. hostmaster.united-domains.de. 2023062207 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0