Update 1/19/2021: We have updated and expanded the information contained here in a new blog post. Please go here to read it: All you need to know about automatic email forwarding in Exchange Online
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Updated Aug 26, 2026
Version 7.0
Blog Post
https://support.office.com/en-us/article/Stop-auto-forwarding-emails-in-Microsoft-365-f9d693ba-5c78-47c0-b156-8e461e062aa7