Domains with DNS TXT v=spf1 ip4:109.70.148.68 +a +mx +include:relay.mailchannels.net -all

There are 450 domains that have DNS TXT set to v=spf1 ip4:109.70.148.68 +a +mx +include:relay.mailchannels.net -all. The top 50 records ordered by domain rank are listed below.