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Hi M365 Experts
My organization is running with an Exchange Hybrid environment.
I'm getting an issue when sending an email (with recipient type UserMailbox) to outside the organization [ example@Stuff .com (this email does not exist)].
Immediately I received a non-delivery report email from M365. This is reasonable.
But when I sent an email (with recipient type Mail-enable security group with Send As permission) to outside the organization (and also that email does not exist). I did not receive any non-delivery report email response from M365. Anyone help me, I appreciate that. Thanks in advance!
I already tried to change the parameter of ReportToManagerEnabled was True and ReportToOriginatorEnabled was False. After sent again and checked the Message trace.
It's notified that already a NDR message was sent to that distribution but when I check that group did not have any NDRs.
@Admin Parker
I am writing here to confirm with you any update about this thread now.
If the suggestion below helps, please feel free to accept it as an answer to help more people.
From investigating, it looks like NDRs sent to groups, where the original email was sent with Send As permissions are automatically suppressed and cannot be worked around.
The solution looks to be to use Send on behalf of permissions instead. Otherwise you 'COULD' convert the mail-enabled group to a Shared Mailbox and re-engineer another mail-enabled group for the purposes it was created for (or the other way round).
I hope that helps!
Daniel
Hi Daniel
Thanks for your help.
Let me try to send it with Send On Behalf.
Thank You.
This is an expected behavior, because the NDR message isn't supported be sent to a group. It is same to NDR send from external or internal recipient.
Here is detailed information about it, the NDR sent to this group will be dropped with Exchange server:
By the way, the ReportToManagerEnabled and ReportToOriginatorEnabled are used to control the NDR generated by group rather than received by group.
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Hi KyleXu
Thanks for your help.
I got it your mean.
My purpose how to tracking the message that was sent from a distribution group to an external recipient.
Example: HR department staff will send invitations to candidates under Send As feature. If unfortunately, they mistyped the candidate's email address, they would like to have 1 NDR sent back to them so they know, correct and send it back.
I have tried the " request a delivery receipt on this message" feature before sending it. But it also only works for mail users, not for mail groups.
Thank You.
If those meetings are sent to specific recipients, I would suggest you add them as mail contact in Exchange online admin center. Tell user choose them from the Address Book rather than type them manually.
You can also use a shared user mailbox to replace this group to send meeting request. Other users could open this mailbox with full access permission to check meeting request.