Merge pull request #330 from v-suhoward/docs-editor/email-authentication-about-1715110965

Adding setup guide resources to email-authentication-about

Author: chrisda

defender-office-365/email-authentication-about.md

@@ -54,6 +54,9 @@ The rest of this article explains:
 - [How Microsoft uses email authentication to check inbound mail sent to Microsoft 365](#inbound-email-authentication-for-mail-sent-to-microsoft-365)
 - [How to avoid email authentication failures when sending mail to Microsoft 365](#how-to-avoid-email-authentication-failures-when-sending-mail-to-microsoft-365)
 
+> [!TIP]
+> Simplify *Microsoft Defender for Office 365* deployment with our [setup guide](https://go.microsoft.com/fwlink/p/?linkid=2268341). Protect against email, link, and collaboration threats. Configure policies, access reports, and automate investigations. Features include Safe Links, Safe Attachments, and more. Sign in credentials are required. Microsoft 365 advanced deployment guides are available for unauthenticated users on [setup.cloud.microsoft](https://go.microsoft.com/fwlink/p/?linkid=2268240). Anyone, from potential Microsoft clients to partners and IT admins, can access the guides and use them freely (credentials aren't required).
+
 ## Why internet email needs authentication
 
 By design, Simple Mail Transfer Protocol (SMTP) email on the internet makes no effort to validate that the message sender is who they claim to be.