Domains with DNS TXT v=spf1 a mx include:spf.hostin.network include:servers.mcsv.net include:_spf.protonmail.ch ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:spf.hostin.network include:servers.mcsv.net include:_spf.protonmail.ch ~all.