Forum Discussion
There are more results available than are currently displayed
I've added 2500 recipients, but the other over 1,000's is not being marked.
Does sending messages to group members continue after 1000 members have passed through the distribution group?
Thanks
Not sure what you mean by "marked"? Most Exchange cmdlets will return a limited set of results, including the DG membership ones. The same applies to the UI, either in the Office 365 Admin center or the EAC.
You can certainly have more than 1000 members of a distribution list, but to get the full membership you need to use PowerShell and the -ResultSize unlimited switch. All of the users should have no issues with receiving messages sent to the list.
For more information you can refer to the Exchange Online Limits article: https://technet.microsoft.com/en-us/library/exchange-online-limits.aspx#DistributionGroupLimits