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

There is 1 domain that have DNS TXT set to v=spf1 +a_+mx include:relay.mailchannels.net ~all.

Top Domains with TXT set to v=spf1 +a_+mx include:relay.mailchannels.net ~all