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Anything in message tracking?
Emails being sent to Distribution list are being received twice
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Dougherty, Brian E
36
Reputation points
Good Morning,
We have a Distribution list. When some email, not all are sent to it, the recipients receive the email twice. One of the emails will have an informational line in it that reads This Message was AutoForwarded. It appears the same person is sending the email twice. The subject does not contain FW: or have a different sender. There are over 200 people in this DL, and I would like to rule out if possibly someone in this group has a rule setup to do this, or just to try and figure out where the forward is occurring and how to get rid of it. This is jamming up people's inboxes.
We are a hybrid shop, our DLs are managed on-premises and our mailboxes are hosted online.
Thank You
Brian D
Exchange Online
Exchange | Exchange Server | Other
1,456 questions
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Dougherty, Brian E 36 Reputation points
2023-09-07T14:55:54.7866667+00:00 Message tracking shows both emails being delivered from the sender to recipient. when i select one and choose View in Explorer and then in there do Preview Email I see the full email. Do the second one, same thing, but it does not have the "This message was AutoForwarded" message.
If I go to Explorer in Security portal and set it to search by the sender, it only returns one email being sent. Attached are what I see in each of the portals and Outlook and what not
Explorer_preview for second selected message in Tracking.png
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Aholic Liang-MSFT 13,886 Reputation points Microsoft External Staff2023-09-08T08:19:15.8333333+00:00 Hi @ Dougherty, Brian E ，
Glad to hear your issue is resolved.
I converted Andy's comment to an answer. You can click the "Accept Answer" button under his post so that other's with similar question can benefit from this thread as well.
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2 answers
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Andy David - MVP 157.8K Reputation points MVP Volunteer Moderator2023-09-07T13:09:50.4933333+00:00 -
Dougherty, Brian E 36 Reputation points
2023-09-07T15:08:33.0566667+00:00 Thank you for the feedback. I found the answer in the message headers and we found the person who has a rule that states if the message is from the DL redirect it to the DL.
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Aholic Liang-MSFT 13,886 Reputation points Microsoft External Staff
2023-09-22T07:49:08.25+00:00 Hi @ Dougherty, Brian E ，
If you find the reply above helpful, do you mind accepting it as answer to help increase visibility of this question for other members of the Microsoft Q&A community? If you still have further concerns about this thread, feel free to post back.
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