Mastering Configuration in Defender for Office 365 - Part Two

Tomsan We appreciate your patience. We are targeting worldwide release of Advanced Delivery by the end of July. Once Advanced Delivery is released (based on actual date), we will ensure customers have 4 weeks to complete migration to the new feature before we start the rollout of Secure by Default for ETRs. Based on the current estimate for Advanced Delivery, this means we will start rollout of Secure by Default end of August and complete in September. We are keeping the following message center posts updated with timeline:

• MC256473, (Updated) Microsoft Defender for Office 365: Introducing Advanced Delivery for Phishing Simulations and SecOps Mailboxes
• MC265759, (Updated) Microsoft Defender for Office 365: Extending Secure by Default for Exchange Transport Rules (ETRs)