Domains with DNS TXT v=spf1 a include:spf.protection.outlook.com include:outboundmail.convio.net ip4:74.112.4.139 ip4:205.251.164.124 -all
There is 1 domain that have DNS TXT set to v=spf1 a include:spf.protection.outlook.com include:outboundmail.convio.net ip4:74.112.4.139 ip4:205.251.164.124 -all.