Domains with DNS TXT v=spf1 ip4:207.55.240.17 +a +mx +ip4:207.55.240.10 +include:relay.mailchannels.net -all

There are 48 domains that have DNS TXT set to v=spf1 ip4:207.55.240.17 +a +mx +ip4:207.55.240.10 +include:relay.mailchannels.net -all. The top 48 records ordered by domain rank are listed below.