Domains with DNS TXT v=spf1 a:relay.yourmailgateway.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf.crsend.com include:agenturserver.de ~all
There is 1 domain that have DNS TXT set to v=spf1 a:relay.yourmailgateway.de include:spf.protection.outlook.com include:spf.hornetsecurity.com include:spf.crsend.com include:agenturserver.de ~all.