Tag: MC221113


MC221113: Office 365 ATP External email forwarding controls and policy change

As a follow up to MC221113 (August 28th), on September 1st, 2020 the Auto-Forwarding Policy will be enforced for tenants who have configured their policy to “On” or “Off”, this includes tenants that had users external forwarding prior to September 1st 2020. Your tenant has been identified as having existing users using external forwarding prior to September 1st 2020, and for this reason the “Automatic” setting will default to “on”, i.e. external forwarding is allowed. We will contact you through a separate message center post when the “Automatic” setting will be updated to “off”.

Office 365 ATP External email forwarding

What you need to do to prepare

You should review your Auto-Forwarding Policy to verify the expected experience:

  1. Use the Auto-forwarded messages report to identify which users in your tenant are automatically forwarding messages outside the organization. Focus on users with either SMTP forwarding or Inbox rules. Exchange transport rules (ETRs) are unaffected by this change.
  2. Configure the outbound spam policies to allow automatic external forwarding for either your entire organization or specific users.

For more information, please see Configuring and controlling external email forwarding in Office 365
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