Licensing Microsoft Entra administrator accounts for email is a common practice, but it introduces avoidable security risks. Privileged accounts should remain isolated from unnecessary communication channels to minimize vulnerabilities. This guide shows how to set up email notifications for admin accounts without assigning them a mailbox license. We’ll also include visual steps for enabling plus …
Enhancing Email Security: Opportunistic TLS and Encryption Solutions In Part 1 of this series, we explored how SMTP DANE and DNSSEC collaborate to secure email communications in Exchange Online, ensuring authenticity and encryption between servers. In this follow-up, we focus on two critical components of email security: Opportunistic TLS and email encryption. Specifically, we’ll examine …
Introduction to SMTP DANE and DNSSEC Securing email communication is critical in the modern digital landscape. SMTP DANE (DNS-based Authentication of Named Entities) and DNSSEC (Domain Name System Security Extensions) are two technologies that strengthen email security by protecting against DNS-based attacks and ensuring encrypted connections between mail servers. What is DNSSEC? DNSSEC enhances the …
What is DMARC DMARC, which stands for Domain-based Message Authentication, Reporting, and Conformance, is a crucial email authentication and anti-phishing technology designed to enhance the security of email communication. It helps organizations combat email fraud, phishing attacks, and unauthorized use of their domain names by allowing domain owners to specify policies for how their email …
In a recent blog post on January 20. the Exchange Team blog announced support for stacking exchange online licenses. Introducing Support for Concurrent Exchange Online License Assignments – Microsoft Community Hub There is several benefits to this new possiblity, mostly its great when you need to change the licensing plan for a user. For example. …
HEADS-UP – Purview will starting April 1. 2023 be replacing the legacy OME way of encrypting outgoing mail from O365. If you don’t do anything, Microsoft will process all mail flow rules that currently applies OME protection to Microsoft Purview Message Encryption protection. This will bring a much more secure and flexible end-user experience, that …
Issue Overview A customer faced a problem where all new users created in the past week and newly added proxy addresses failed to receive emails from external senders due to Directory-Based Edge Blocking causing 550 5.4.1 NDR. Internal emails worked fine, but external messages were rejected with the error: 550 5.4.1 [user@Customerdomain.com]: Recipient address rejected: …
