Several years ago, we announced Throttling and Blocking Email from Persistently Vulnerable Exchange Servers to Exchange Online. Since then, we have been periodically updating the “oldest acceptable v...
Updated Sep 02, 2026
Version 2.0
Blog Post
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Exchange 2016/2019: Throttling and Blocking up to the Final Public Update Baseline
I'm running Exchange SE version 15.2.2562.20 ( yeah its a year behind) and I am getting messages blocked. Even though it is listed as compliant. I paused enforcement, but I shouldn't have had to.