Domains with DNS TXT v=spf1 a: ip4:176.31.17.164 include:spf.protection.outlook.com include:s816.smtp-spf.sureserver.com -all
There is 1 domain that have DNS TXT set to v=spf1 a: ip4:176.31.17.164 include:spf.protection.outlook.com include:s816.smtp-spf.sureserver.com -all.