Domains with DNS TXT v=spf1 ip4:217.21.72.101 include:relay.mailchannels.net +a +mx +ip4:156.67.211.1 ~all
There are 341 domains that have DNS TXT set to v=spf1 ip4:217.21.72.101 include:relay.mailchannels.net +a +mx +ip4:156.67.211.1 ~all. The top 50 records ordered by domain rank are listed below.