Domains with DNS TXT v=spf1 include:_spf.protonmail.ch include:spf.example.com ~all +a +mx +ip4:66.198.240.21 include:spf.a2hosting.com ~all
There is 1 domain that have DNS TXT set to v=spf1 include:_spf.protonmail.ch include:spf.example.com ~all +a +mx +ip4:66.198.240.21 include:spf.a2hosting.com ~all.