Domains with DNS TXT v=spf1 include:spf.protection.outlook.com include:agenturserver.de include:return-cname.emailsys.net include:spf.hornetsecurity.com +a +mx -all
There is 1 domain that have DNS TXT set to v=spf1 include:spf.protection.outlook.com include:agenturserver.de include:return-cname.emailsys.net include:spf.hornetsecurity.com +a +mx -all.