mx2.uni-greifswald.de has no MX records.
Question and response
Question
dig mx2.uni-greifswald.de. MX
Answer
The response has no answer records.
Authority
uni-greifswald.de. 172800 SOA dns1.uni-greifswald.de. hostmaster.uni-greifswald.de. 2026022329 86400 7200 1814400 172800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0