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Isometric illustration of a three-layer security shield protecting email envelopes with DNS record icons representing SPF DKIM and DMARC authentication for Azure Communication Services

DNS Configuration for ACS Email: SPF, DKIM, and DMARC Done Right

SPF, DKIM, and DMARC work together as a three-layer authentication shield that determines whether your ACS emails get delivered or dumped. You set up ACS Email, sent a test message, and it worked. Great. But here’s the uncomfortable truth: your emails are one inbox provider update away from landing in…

Isometric diagram showing Azure Communication Services email architecture with a central cloud hub routing emails to and from application servers, copiers, development laptops, and monitoring dashboards

Why SMTP Relay Is Breaking Your Applications (and How to Fix It with Azure Communication Services)

Most organizations still rely on SMTP relay through Microsoft Exchange or Microsoft 365 (which is just Exchange Online on the backend) to send application and device-generated email. While this approach technically works, it introduces security risks, operational complexity, and scalability limitations that are increasingly problematic in modern environments. Azure Communication Services (ACS)…