Hi @Sandhya Nepali ,
NDR emails go into the junk folder, this can be due to a number of reasons.
To troubleshoot, please double-check the content of the NDR email to see if there are any words or phrases that might trigger spam filters. If so, try rewriting your email to avoid these triggers. Alternatively, you could try the general troubleshooting steps for emails being mistakenly sent to the Junk Email folder to see if that resolves the issue. For more information, you can refer to https://support.microsoft.com/en-us/office/mail-goes-to-the-junk-folder-by-mistake-f409b58c-2617-47e2-8a97-cab612d98eff Besides, you could create a rule directly to move these NDR messages to your inbox.
Hope the above information is helpful to you!
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