Domains with DNS TXT v=spf1 ip4:148.66.55.194 include:relay.mailchannels.net ip4:103.44.161.194 include:eventsairmail.com include:sendgrid.net +a +mx ~all
There is 1 domain that have DNS TXT set to v=spf1 ip4:148.66.55.194 include:relay.mailchannels.net ip4:103.44.161.194 include:eventsairmail.com include:sendgrid.net +a +mx ~all.