Domains with DNS TXT v=spf1 ip4:207.55.240.17 +a +mx +include:relay.mailchannels.net -all
There are 32 domains that have DNS TXT set to v=spf1 ip4:207.55.240.17 +a +mx +include:relay.mailchannels.net -all. The top 32 records ordered by domain rank are listed below.