Question and response
Question
dig _spf.cmail.uvtnet.cz. TXT
Answer
_spf.cmail.uvtnet.cz. 300 TXT "v=spf1 ip4:109.205.73.143 ip6:2a00:1238:0:96::e -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0