Today’s #MicrosoftQuickFix is that #Microsoft will soon begin sending DMARC Aggregate Reports as part of the #DMARC standard and as the owner of a domain you can request reports be sent to wherever your DMARC DNS record RUA setting points to. Is it time to revisit your #Microsoft365 domains DMARC, DKIM and SPF security settings?
Phishing attacks are getting more sophisticated and most organizations have implemented email security measures like SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) to help mitigate these risks.
Unfortunately SPF and DKIM alone do not provide 100% protection against email attacks or nefarious hackers spoofing a companies domain regardless of SPF and DKIM implementation.
DMARC (Domain-based Message Authentication, Reporting) works with SPF and DKIM to authenticate your mail senders. With a DMARC record configured you’ll get reports that provide the status of your email authentication so you can improve it if needed. This helps you detect malicious emails that claim to be from your domain.
Note: DMARC reports are in XML format and contain a lot of technical data. There are several DMARC report analyzer tools available as well as third-party vendors offering DMARC reporting capabilities.
Using DMARC with SPF and DKIM gives organizations more protection against spoofing and phishing of email. DMARC also helps receiving mail systems decide what to do with messages from your domain that fail SPF or DKIM checks thru the actionable DMARC policy you specify.
DMARC Aggregate Reports will be available for all Exchange Online Protection customers beginning in late February 2023 with expected rollout to complete in late March 2023.
For more information about DMARC in Microsoft 365 see:
- Use DMARC to validate email, setup steps – Office 365 | Microsoft Learn
- Best practices for implementing DMARC in Microsoft 365
#Microsoft #Microsoft365 #MicrosoftDefender #ExchangeOnline #DMARC #DKIM #SPF #MicrosoftCloudSecurity #MicrosoftCloudQuickFix