Domains with DNS TXT v=spf1 mx a include:ispgateway.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.com-all
There is 1 domain that have DNS TXT set to v=spf1 mx a include:ispgateway.de include:spf.protection.outlook.com include:spf-de.emailsignatures365.com-all.