Domains with DNS TXT v=spf1 ip4:217.21.72.151 include:mailchannels.net include:relay.mailchannels.net +a +mx +ip4:156.67.209.1 ~all
There is 1 domain that have DNS TXT set to v=spf1 ip4:217.21.72.151 include:mailchannels.net include:relay.mailchannels.net +a +mx +ip4:156.67.209.1 ~all.