Domains with DNS TXT v=spf1 include:_spf.protonmail.ch include:mail-4022.proton.ch mx -all

There is 1 domain that have DNS TXT set to v=spf1 include:_spf.protonmail.ch include:mail-4022.proton.ch mx -all.

Top Domains with TXT set to v=spf1 include:_spf.protonmail.ch include:mail-4022.proton.ch mx -all