#DKIM

2 guides

Diagram-style cover showing layered Microsoft 365 phishing defenses: anti-phishing policy, Safe Links, MFA, and email authentication records

How to Protect Microsoft 365 from Phishing Emails

Build layered phishing defense in Microsoft 365: anti-phishing policies, impersonation protection, Safe Links and Attachments, MFA, DMARC/SPF/DKIM, and user reporting.

MCSA Guru Team Aug 30, 2026 8 min read

Diagram-style cover showing a custom domain connecting to Microsoft 365 through DNS records for verification and mail flow

Microsoft 365 & Exchange

How to Add a Custom Domain to Microsoft 365

Add your own domain to Microsoft 365: verify ownership with a TXT record, set the right MX, CNAME, SPF, and DKIM records, and fix common verification failures.

MCSA Guru Team Jul 2, 2026 8 min read