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There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:relay.mailchannels.net ip4:185.52.149.84 include:sparkpostmail.com include:spf.host-h.net -all.

Top Domains with TXT set to v=spf1 include:spf.protection.outlook.com include:relay.mailchannels.net ip4:185.52.149.84 include:sparkpostmail.com include:spf.host-h.net -all