Tag: Historical message trace

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Finding Unused Proxy Addresses for Exchange Online Mail-Enabled Objects

Finding Unused Proxy Addresses for Exchange Online Mail-Enabled Objects

A request came in about how to find unused proxy addresses for Exchange Online mail-enabled objects. There's no out-of-the-box report available for proxy address usage, but we can solve the problem by using a PowerShell script to download historical message trace data to check every proxy address for all mailboxes against. The question then is what to do with the unused proxy addresses?

November 5, 2025
Creating an Exchange Online Inbound Email Traffic Report for the Last 90 Days 2 Comments

Creating an Exchange Online Inbound Email Traffic Report for the Last 90 Days

Exchange Online keeps message trace data online for 10 days. If you want an email traffic report covering longer periods, you need to retrieve historical message data (for up to 90 days) and report that data. That's the easy description. This article explains some of the complexities involved in generating a 90-day email traffic report for a Microsoft 365 tenant.

November 28, 2023