Malicious MCP Servers & Email Security: The New Supply Chain Threat
BlogThe postmark-mcp incident exposed a new category of threat: malicious MCP servers silently exfiltrating emails at scale. Learn how AI supply chain attacks target email infrastructure — and how DMARC and email authentication protect you.
How to Split a DKIM Record
Blog, DKIMRunning into a 255-character limit when adding your DKIM record? Learn how to split a DKIM TXT record into multiple strings the right way — step-by-step, with examples for Route 53, Google Cloud DNS, and more.
Office 365 Anti-Phishing Policy: How to Configure It
Blog, Email DeliverabilityOffice 365’s built-in anti-phishing policy stops spoofing and impersonation — but only if it’s configured correctly. Learn what it covers, what it doesn’t, and how DMARC fills the gap.
How to Set Up Email Authentication for a Newly Registered Domain
Blog, Email DeliverabilityJust registered a domain? Learn how to set up SPF, DKIM, and DMARC step by step to protect it from spoofing and ensure email deliverability from day one.
AI Agent Security: Risks, Best Practices, and Email Authentication
Blog, Email SecurityAI agents introduce serious cybersecurity risks - from prompt injection to email spoofing. Learn how to secure agentic workflows with least-privilege access, audit logging, and DMARC enforcement.
PowerDMARC Now Integrates with HaloPSA
NewsPowerDMARC now integrates with HaloPSA. MSPs and MSSPs can automate customer mapping, subscription sync, and DMARC alert-to-ticket creation directly in their PSA platform.
