Domains with DNS TXT v=spf1 +a +mx +ip4:156.155.252.67 include:relay.mailchannels.net include:_netblocks.mimecast.com -all
There is 1 domain that have DNS TXT set to v=spf1 +a +mx +ip4:156.155.252.67 include:relay.mailchannels.net include:_netblocks.mimecast.com -all.