Domains with DNS TXT v=spf1 a include:spf.flexfilter.nl include:spf.itsdonline.nl include:_spf.e-boekhouden.nl -all
There is 1 domain that have DNS TXT set to v=spf1 a include:spf.flexfilter.nl include:spf.itsdonline.nl include:_spf.e-boekhouden.nl -all.