Mimecast Corp. DMARC Analyzer SPF Delegation

Cybercriminals consistently take advantage of how easy it is to impersonate an organization's email to dupe their customers, supply chain and even their own employees. Domain spoofing, where an attacker essentially forges your email to make it look as though their communication has come from a trusted source, is a common tactic used in phishing campaigns and business email compromise (BEC). It's a big reason why email continues to be the tool of choice for cyber attackers.
Ignoring this problem can significantly impact your brand reputation, business relationships and the successful delivery of your own outbound business email. To successfully combat this type of attack you need full visibility into all email senders using your domain to identify legitimate versus fraudulent senders.
Enter Domain-based Message Authentication Reporting and Conformance (DMARC).