Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:mailgun.org ~all

There are 5 domains that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:spf.smtp2go.com include:mailgun.org ~all. The top 5 records ordered by domain rank are listed below.

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