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There is 1 domain that have DNS TXT set to v=spf1 include:secumail.email include:spf.protection.outlook.com include:spf-westeu.emailsignatures365.com include:spf.geenspam.mx include:spf.horizonbegeleiding.nl include:spf.sendinblue.com -all.

Top Domains with TXT set to v=spf1 include:secumail.email include:spf.protection.outlook.com include:spf-westeu.emailsignatures365.com include:spf.geenspam.mx include:spf.horizonbegeleiding.nl include:spf.sendinblue.com -all