Domains with DNS TXT v=spf1 ip4:66.225.221.178 +a +mx include:relay.mailchannels.net ~all

There are 230 domains that have DNS TXT set to v=spf1 ip4:66.225.221.178 +a +mx include:relay.mailchannels.net ~all. The top 50 records ordered by domain rank are listed below.