Domains with DNS TXT v=spf1 a a:mail.zondag.nl include:spf.mailfilter.ict-concept.nl include:_spf.mijnwefact.nl -all
There is 1 domain that have DNS TXT set to v=spf1 a a:mail.zondag.nl include:spf.mailfilter.ict-concept.nl include:_spf.mijnwefact.nl -all.