Put into practice Area-centered Concept Authentication, Reporting and Conformance (DMARC) policy and verification to decreased the chance of spoofed or modified e-mails from legitimate domains. DMARC protects your domain from currently being spoofed but doesn't safeguard from incoming e-mail that have been spoofed unless the sending domain also implements DMARC. https://lorenzowzehk.wikipublicity.com/5444168/a_simple_key_for_datenrettung_nach_ransomware_angriff_unveiled