Uploaded February 2025 | Updated September 2026, 1 week ago

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Explore how office 365 encryption works within exchange online mail flow and the microsoft exchange server environment. This comprehensive guide helps you understand data protection measures and exchange server fundamentals when sending emails between Outlook clients and Exchange Online servers.

This simple Exchange Online training tutorial is perfect for IT professionals looking to enhance their cybersecurity knowledge in Microsoft's cloud environment.

0:00 Introduction
0:20 Outlook to Outlook Encryption
1:10 When is Encryption Not On by Default
2:22 Why Set End to End Email Encryption
3:05 How To Set an Email Address to Always Use Encryption
5:00 How To Change Mail Flow Rules in Exchange Online
5:45 What Does the Lock Icon Mean on an Outlook Email
6:10 Outro