Question and response
Question
dig _spf.yourfilter.nl. TXT
Answer
_spf.yourfilter.nl. 3600 TXT "v=spf1 include:_spf4.yourfilter.nl include:_spf6.yourfilter.nl a:smtp-cl01.hostcontrol.com a:pcx.yourfilter.nl -all"
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1680, xrcode 0, version 0, flags 0