secondns.at has no MX records.
Question and response
Question
dig secondns.at. MX
Answer
The response has no answer records.
Authority
secondns.at. 3600 SOA acglob.firstns.cc. support.anexia-it.com. 8 14400 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0