Domains with DNS TXT v=spf1 a include:spf.protection.outlook.com include:_spf.relay.mailprotect.be include:_spf.createsend.com include:mailgun.org -all

There are 4 domains that have DNS TXT set to v=spf1 a include:spf.protection.outlook.com include:_spf.relay.mailprotect.be include:_spf.createsend.com include:mailgun.org -all. The top 4 records ordered by domain rank are listed below.

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