rfree2.blue-shield.at has no MX records.
Question and response
Question
dig rfree2.blue-shield.at. MX
Answer
The response has no answer records.
Authority
blue-shield.at. 3600 SOA ns1.netzpionier.at. support.netzpionier.at. 2015112800 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0