Emails to distribution list being dropped

Question

Emails have just been dropped with no NDR. These are internal users messaging an internal distribution group. The support tech had no idea, and refused to escalate the case. When I did a message trace this is the error I got

Drop Reason: [{LED=250 2.1.5 RESOLVER.GRP.Expanded; distribution list expanded};{MSG=};{FQDN=};{IP=};{LRT=}]

Is there a way to escalate cases? I've heard nothing in over a day even after requesting an update.

design360 · Answer

VasilMichev&nbsp;The problem is not all of us are Powershell users and prefer a GUI as we don't have time to learn Powershell. Having just moved from Google to Microsoft 365 I can already see how easy Google's system is in comparison. Having to use Powershell for some things in Microsoft 365 is fine for seasoned IT Pros but not for those of us that have never use Exchange before. So far I'm not impressed with the admin experience of using Microsoft 365 compared to Google Workspace.

simbur2365 · Answer

- you can do a detailed trace report from the admin center..https://admin.exchange.microsoft.com/#/messagetrace- If the group includes nested groups that are synced from your on premises Active Directory, check that the groups are mail enabled and has an email address.

design360 · Answer

Since I posted my reply I've had more time to live with the Admin center. I've even done some email tracing using it already. Incidentally, I came to this post because I was getting a similar issue. However, my trouble turned out to be that I had actually forgotten to add any email addresses to the Distributon Group after I created it. LOL.

agion · Answer

I can see both sides, Powershell gives you more functionality with what's really happening that I can't get with Google (I'm a novice there). But it really is annoying AF to have to jump between GUI &amp; Powershell for some things that should be easy to put in GUI. GUI is just so much simpler and more efficient if working with many user problems a day. Just lazy programming at Microsoft, because why isn't everyone born Powershell experts?

vasilmichev · Answer

That message is perfectly normal for emails sent to DLs, post the full message trace.

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Emails to distribution list being dropped

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