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Update outbound-spam-high-risk-delivery-pool-about.md
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puneethmeister authored Oct 22, 2024
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Expand Up @@ -72,7 +72,6 @@ The forwarded or relayed message should meet one of the following criteria to av
- SPF passes when the message comes to Microsoft 365.
- DKIM on the sender domain passes when the message comes to Microsoft 365.

You can tell that a message was sent via the relay pool by looking at the outbound server IP (the relay pool is in the 40.95.0.0/16 range).

In cases where we can authenticate the sender, we use Sender Rewriting Scheme (SRS) to help the recipient email system know that the forwarded message is from a trusted source. You can read more about how that works and what you can do to help make sure the sending domain passes authentication in [Sender Rewriting Scheme (SRS) in Office 365](/office365/troubleshoot/antispam/sender-rewriting-scheme).

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