Domains with DNS TXT v=spf1 ip4:64.191.152.66 include:usb._netblocks.mimecast.com -all

There is 1 domain that have DNS TXT set to v=spf1 ip4:64.191.152.66 include:usb._netblocks.mimecast.com -all.

Top Domains with TXT set to v=spf1 ip4:64.191.152.66 include:usb._netblocks.mimecast.com -all