Emails are not getting synchronized with the Distribution List

Hi @IKRAMUDDIN Mohammed - ACCENTURE

I understand that you are experiencing an issue where your account is not receiving new emails sent to the Distribution List (DL). 

To help us better investigate and resolve this issue, could you please provide more details for the following questions: 

Have there been any recent changes to your account, mailbox, or the Distribution List? 

Does this issue occur only with your account, or do other members of the same Distribution List experience the same behavior? 

In the meantime, please try the following steps: 

Check email behavior via Outlook on the Web (OWA) 

This will help determine whether the issue is related to the Outlook desktop application or the mail server: 

Go to OWA and sign in. 

Search for the Distribution List or Group email address. 

If applicable, open the shared group inbox or conversations. 

Check whether the most recent emails appear there. 

Check account and Distribution List configuration 

You may ask your administrator to verify whether there is any misconfiguration with your account or the Distribution List. They can also run a message trace to confirm whether emails are being affected by mail flow rules, filtering, or quarantine. 

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

Additionally, you may ask your administrator to remove your account from the Distribution List and add it back, then send a test email to check whether the synchronization issue still persists. 

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. 

Note: Please follow the steps in [our documentation] to enable e-mail notifications if you want to receive the related email notification for this thread. 

For emails sent to a distribution list that are not synchronizing or tracking as expected, the issue is typically on the server-side synchronization and Dataverse/Exchange side rather than Outlook itself.

Key points and checks:

1. Emails to distribution lists are not automatically tracked by default
   • Dataverse resolves recipient email addresses to known Dataverse users or queue records.
   • If the recipient is a distribution group, Dataverse cannot directly resolve that group to a user or queue, so emails to that address are not automatically tracked.
2. Configure the underlying mailbox that actually receives the email
   • Distribution lists deliver messages to one or more underlying user or shared mailboxes.
   • To have these emails automatically tracked/synchronized, configure the Dataverse mailbox record for the recipient mailbox (user or queue) that receives the messages from the distribution list.
   • Set that mailbox’s Incoming Email filtering method to accept All Email Messages so that messages arriving via the distribution list are tracked.
   • Guidance for this configuration is in the personal options and mailbox settings for tracking and synchronization between customer engagement apps and Outlook/Exchange. See: “Set personal options that affect tracking and synchronization between customer engagement apps and Outlook or Exchange.”
3. Verify common server-side synchronization causes If emails stopped synchronizing after 2024/2025 and nothing new is appearing:
   • Check for failures in custom plugins or workflows that run on email create; failures can prevent email activity creation.
   • Confirm that at least one Dataverse user/queue that receives the distribution list mail is configured to automatically accept incoming email based on their incoming email filtering method.
   • Ensure the mailbox owner has a valid license and sufficient privileges for email synchronization.
   • Confirm that the emails remain in the root Inbox of the target mailbox until tracked; moving them to subfolders too early can cause them to be skipped.
   • Check for configuration/connectivity issues between the mailbox and Exchange; review mailbox alerts on the mailbox record.
4. Use the Server-Side Synchronization Item Level Monitoring dashboard
   • In Dataverse, open Email Configuration → Server-Side Synchronization Item Level Monitoring.
   • Look for recent email items that failed to sync and review the Sync Error column for specific error codes (for example, plugin failures or NoCorrelationMatch).
   • Use the linked troubleshooting articles from the Sync Error column to resolve the specific error.
5. Review mailbox alerts
   • In the Power Platform admin center, go to Settings → Email → Mailboxes, open the affected mailbox (the one that receives the distribution list mail), and check Alerts.
   • Resolve any workflow, plugin, or configuration errors shown there, as they can block email creation and synchronization.

Once the underlying recipient mailbox is configured to accept All Email Messages and any synchronization errors are resolved, new emails sent to the distribution list should start synchronizing again.

References:

• Emails aren't automatically tracked or synchronized using server-side synchronization