When sending to a distribution list, not all the recipients receive the email.

Nicola Doyle 0 Reputation points

Hi all,

We have some global distribution lists that contain a mixture of internal and external email addresses.

Most of the time we hear that some of the recipients within the DL has not received the said email. The (convoluted) work-around we have is:

Open New Email

Enter Distribution List into TO field

Expand the list

Then send.

Surely this can't be right.

A family of Microsoft email and calendar products.
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  1. Faery Fu-MSFT 14,241 Reputation points Microsoft Vendor

    Hi @Nicola Doyle ,

    If you can send email to all recipients individually, there may be an issue with the distribution list's settings.

    • Make sure you've allowed people outside your organization to send emails to the distribution group. The two toggles at the bottom of the Edit details pane should be set to On. Screenshot 2023-11-17 141500
    • External members don't receive email messages that are sent to a group they're a member of, and the senders don't receive non-delivery message about the email. Read External members don't receive email... for steps on how to fix this issue.

    If you are still having problems, you can try deleting the distribution list and then re-creating a new one.

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