I have created some group emails, can anyone helps me to know why I am still not able to receive from external while I already did all required since 3 days?

Question

Hello..

I have created some group emails, can anyone help me to know why I am still not able to receive from external while I already did all required since 3 days?

I need a support to know if there is any missing step.

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moved from "Microsoft 365 and Office Access Other Other"

Answer 1

Hi @Dekmak, Wissam

Thank you for posting your question in Microsoft Q&A. 

I understand that you are experiencing an issue where external senders are unable to send emails to your group mailbox. 

Could you please help check whether you have already configured your group email to allow external senders? 

You can verify it by going to: 

Microsoft 365 Admin Center > Groups > Active groups > Select the group mail > Settings > Enable:  “Allow external senders to email this group” 

Additionally, please run a Message Trace to verify whether the external emails were blocked or filtered. 

From the Exchange Admin Center:  Mail Flow > Message Trace 

When reviewing the trace, please check: 

Whether the email reached the group. 

Whether it was marked as spam.

Whether it was blocked by any policy or mail flow rule.

You can refer via: New Message trace in EAC in Exchange Online | Microsoft Learn 

To better assist you with this issue, could you please provide the following additional information: 

Does the external sender receive any NDR (Non‑Delivery Report) or bounce‑back message after sending the email? 

May I know the exact type of your group?

Does this issue occur with all external senders, or only specific ones?

Please understand that our initial reply may not always immediately resolve the issue. However, with your help and more detailed information, we can work together to find a solution. 

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Answer 2

If you are not receiving emails from external senders to your group email, there are a few things you should check:

1. External Senders Permission: Ensure that your group email settings allow external senders to send emails to the group. In the Microsoft 365 admin center, navigate to the group settings and verify that the option to allow external senders is enabled.
2. Distribution Group Creation Time: Sometimes, it takes about 60 minutes for distribution groups to be fully created and ready for management. If you created the group recently, make sure you've waited the appropriate amount of time.
3. Correct Group Type: Verify that you created a distribution group and not a Microsoft 365 group, as the latter has different settings regarding external emails.
4. Spam Filtering: If spam filtering is enabled on your email system, it may be blocking messages from external senders. Check your spam settings to ensure that legitimate emails are not being filtered out.

If you've checked all of these and are still having issues, you may want to consult with your IT support team for further assistance.

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References:

• Distribution group issues
• External recipients don't receive email messages that are sent to a distribution group in Exchange Online and senders don't receive nondelivery reports