Domains with DNS TXT v=spf1 a include:spf.insyst.de include:spf.protection.outlook.com include:_spf.de.seppmail.cloud -all
There is 1 domain that have DNS TXT set to v=spf1 a include:spf.insyst.de include:spf.protection.outlook.com include:_spf.de.seppmail.cloud -all.