saw.n0q.de has no MX records.
Question and response
Question
dig saw.n0q.de. MX
Answer
The response has no answer records.
Authority
n0q.de. 300 SOA nsx.nsserve.de. noc.nsserve.de. 1 300 225 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0