Domains with DNS TXT v=spf1 a mx include:spf.crsend.com include:_spf.smtp.com include:spf.sendinblue.com include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com ~all

There is 1 domain that have DNS TXT set to v=spf1 a mx include:spf.crsend.com include:_spf.smtp.com include:spf.sendinblue.com include:spf.ess.de.barracudanetworks.com include:spf.protection.outlook.com ~all.

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