Domains with DNS TXT v=spf1 +a +mx +ip4:185.137.220.37 +include:out.mthnetworks.com +include:relay.mailchannels.net ~all
There is 1 domain that have DNS TXT set to v=spf1 +a +mx +ip4:185.137.220.37 +include:out.mthnetworks.com +include:relay.mailchannels.net ~all.