Domains with DNS TXT v=spf1 a mx include:spfa.gc-system.cz include:clavius.cz include:spf.protection.outlook.com ~all
There is 1 domain that have DNS TXT set to v=spf1 a mx include:spfa.gc-system.cz include:clavius.cz include:spf.protection.outlook.com ~all.