About SPF, DMARC and DNSSEC

DMARC:

Create a 14 Day trial account at https://dmarcian.
Setup and get unique email addresses, create a DMARC TXT record:

_dmarc.cyberjunky.nl
v=DMARC1; p=reject; rua=mailto:ci2xsqr1@ag.dmarcian.com; ruf=mailto:ci2xsqr1@fr.dmarcian.com;

https://dmarcian.com/dmarc-inspector/?domain=cyberjunky.nl


SPF:

To check send an email from the domain you want to test to check-auth@verifier.port25.com

Create a SPF TXT record (hosted by Google's gmail):

v=spf1 include:_spf.google.com -all
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DNSSEC:

Already taken care of by Versio:

https://dnssec-debugger.verisignlabs.com/cyberjunky.nl

Resources:

https://kitterman.com/dmarc/assistant.html