In Office 365 Exchange how does one obtain a list of existing dynamic distribution groups? Is power shell required?
You can see your groups via web UI: Exchange admin center -> recipients -> groups Then you need to search -> advanced search provide recipient types "Dynamic distribution groups" and OK it
Powershell is not required, but is a good option: You need to connect to Exchange Online session as per Microsoft Technet article.
Supply your Office365 admin user credentials:
$UserCredential = Get-Credential
Then create a session(one line):
$Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $UserCredential -Authentication Basic -AllowRedirection
When connected issue
Get-DynamicDistributionGroup which will give you the list.
You can use Exchange admin center to view all available dynamic distribution group. else you can use below PowerShell commands.
$Credential=Get-Credential -Credential $null $Session = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://outlook.office365.com/powershell-liveid/ -Credential $Credential -Authentication Basic -AllowRedirection Import-PSSession $Session -AllowClobber Get-DynamicDistributionGroup
viewing members of a Dynamic Distribution Group are not feasible in the Office 365 Admin Portal.PowerShell is the only way to view members.