It’s important to know if a tenant has any very large distribution lists as these might be the source of reply-all mail storms. An old article explains how to report the membership counts for distribution lists on an on-premises Exchange server. Life is different in the cloud, and we need to take a different approach. This article explains how to use different calls in a PowerShell script to create a nice report about distribution list memberships.
New-DistributionGroup: A PowerShell Cmdlet Which Gets No Respect
The New-DistributionGroup cmdlet has been in Exchange since 2006. It creates a new distribution list that is easily populated with a few commands. Although Microsoft might like everyone to use the new-fangled Microsoft 365 Groups, the fact remains that distribution lists are very useful. So much so that many millions are still in active use. In this article, we explore how to create new standard and dynamic distribution lists with PowerShell.
MailTips Group Metrics and Large Audience Warnings in Outlook
How group metrics and MailTips work to warn users when they are composing an email message to a large number of recipients.
Get Distribution Group Member Counts with PowerShell
How to use PowerShell to report the member counts for distribution groups in an Exchange Server environment.
Pros and Cons of Using Separate Security and Distribution Groups
A look at some of the pros and cons of using separate security and distribution groups in an Exchange Server environment.