Ensure DMARC Records for all Exchange Online domains are published
Why This Matters
Without a DMARC record, recipient mail servers have no clear policy on how to handle messages that fail SPF or DKIM authentication. This leaves your domain vulnerable to spoofing and phishing attacks, where attackers can send emails that appear to come from your organization. Implementing DMARC gives you control over unauthenticated email and helps protect your brand and recipients.
What Aether365 Checks
Aether365 verifies that a DMARC DNS record (starting with v=DMARC1) is published for each accepted domain configured in your Exchange Online organization. This check appears in your Aether365 dashboard under the microsoft-365 category.