mail2a.psa-services.net has no MX records.
Question and response
Question
dig mail2.sprit.org. MX
Answer
The response has no answer records.
Authority
sprit.org. 600 SOA cns1.cloudpit.de. hostmaster.dogado.de. 2025101505 28800 3600 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0