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How to Configure Inbound SMTP DANE & DNSSEC in Exchange Online
We’re already sending emails securely, now it’s time to secure inbound email as well! Back in 2022, Microsoft enabled outbound SMTP DANE with DNSSEC for all Exchange Online customers, including MSA (hotmail, live, outlook), ensuring encrypted delivery when sending to domains that support it. Finally, at the tail end of 2024, Microsoft enabled inbound SMTP DANE with DNSSEC across all Exchange Online tenants in a public preview. This adds transport-layer security for receiving

Sebastian F. Markdanner
17 hours ago5 min read


Modern Email Security Explained: From Sender Authentication to Transport Security
Sending an email securely requires more moving parts than most people expect, you don’t notice when it works. You really notice when it doesn’t! Email is still one of the most critical, and most abused, communication channels in modern IT environments. While most organizations rely on email every day, not enough people knows how emails, and the security surrounding it, actually works under the hood. This post breaks down the core building blocks of modern email security, fro

Sebastian F. Markdanner
Feb 912 min read


Mastering Plus Addressing in Microsoft: Simplify Email Management
Managing emails for unlicensed admin accounts? Juggling a shared mailbox flooded with notifications from services and clients? Today’s solution: Plus addressing! In the world of IT administration, juggling multiple identities for a single employee can feel like a high-stakes balancing act. Notifications, admin emails, approval requests, and consent forms all demand clear separation from daily accounts. But licensing admin accounts? That can quickly get complicated. Enter Plus

Sebastian F. Markdanner
Jan 20, 20253 min read
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