Question and response
Question
dig supportboxmailer.cz. TXT
Answer
supportboxmailer.cz. 900 TXT "v=spf1 mx a ip4:89.185.227.51 ip4:89.185.227.52 include:spf1.supportboxmailer.cz ~all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0