Domains with DNS TXT v=spf1 mx include:_spf.google.com include:s4b.digital include:spf.protection.outlook.com include:antispameurope.com include:ispgateway.de ~all
There is 1 domain that have DNS TXT set to v=spf1 mx include:_spf.google.com include:s4b.digital include:spf.protection.outlook.com include:antispameurope.com include:ispgateway.de ~all.