Domains with DNS TXT v=spf1 include:_spf.psm.knowbe4.com include:outgoing-relays.descartes.com include:mailrelay.descartes.com include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com -all
There is 1 domain that have DNS TXT set to v=spf1 include:_spf.psm.knowbe4.com include:outgoing-relays.descartes.com include:mailrelay.descartes.com include:spf.protection.outlook.com include:spf.ess.ca.barracudanetworks.com -all.