Domains with DNS TXT v=spf1 a include:emailsrvr.com include:spf.protection.outlook.com include:_spf.softtechhosting.nl include:sparkpostmail.com include:spf.mailjet.com include:_spf.zivver.com -all
There is 1 domain that have DNS TXT set to v=spf1 a include:emailsrvr.com include:spf.protection.outlook.com include:_spf.softtechhosting.nl include:sparkpostmail.com include:spf.mailjet.com include:_spf.zivver.com -all.