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