Commands › Exchange Online

Get-EXOCasMailbox

Exchange Online ExchangeOnlineManagement Get-*

For more information, see About the Exchange Online PowerShell module. Use the Get-EXOCasMailbox cmdlet to view the Client Access settings that are configured on mailboxes.

Quick start script

# Get-EXOCasMailbox — quick start (serv365.ai)
# 1. Connect (app-only shown; interactive: omit the certificate parameters)
Connect-ExchangeOnline -CertificateThumbprint $thumb -AppId $appId -Organization $org

# 2. Run and inspect
Get-EXOCasMailbox | Format-List

# 3. Export for evidence / drift tracking
Get-EXOCasMailbox | Export-Clixml .\EXOCasMailbox-$(Get-Date -Format yyyyMMdd).xml

Syntax — 2 parameter sets

Identity (Default)

Get-EXOCasMailbox [[-Identity] <String>]
 [-ActiveSyncDebugLogging]
 [-ExternalDirectoryObjectId <Guid>]
 [-Filter <String>]
 [-GetImapProtocolLog]
 [-GetPopProtocolLog]
 [-IgnoreDefaultScope]
 [-OrganizationalUnit <String>]
 [-PrimarySmtpAddress <String>]
 [-Properties <String[]>]
 [-PropertySets <PropertySet[]>]
 [-ProtocolSettings]
 [-ReadIsOptimizedForAccessibility]
 [-ResultSize <Unlimited>]
 [-SendLogsTo <String[]>]
 [-UserPrincipalName <String>]
 [<CommonParameters>]

Anr

Get-EXOCasMailbox [-Anr <String>]
 [-ActiveSyncDebugLogging]
 [-Filter <String>]
 [-GetImapProtocolLog]
 [-GetPopProtocolLog]
 [-IgnoreDefaultScope]
 [-OrganizationalUnit <String>]
 [-Properties <String[]>]
 [-PropertySets <PropertySet[]>]
 [-ProtocolSettings]
 [-ReadIsOptimizedForAccessibility]
 [-ResultSize <Unlimited>]
 [-SendLogsTo <String[]>]
 [<CommonParameters>]

Parameters (17)

Parameter	Type	What it controls
-Identity	String	The Identity parameter specifies the mailbox you want to view. For the best performance, we recommend using the following values:
-Anr	String	The Anr parameter specifies a string on which to perform an ambiguous name resolution (ANR) search. You can specify a partial string and search for objects with an attribute that matches that string. The default...
-ActiveSyncDebugLogging	SwitchParameter	This parameter is reserved for internal Microsoft use.
-ExternalDirectoryObjectId	Guid	The ExternalDirectoryObjectId parameter identifies the mailbox that you want to view by the ObjectId in Microsoft Entra ID.
-Filter	String	The Filter parameter uses OPATH syntax to filter the results by the specified properties and values. The search criteria uses the syntax `"Property -ComparisonOperator 'Value'"`.
-GetImapProtocolLog	SwitchParameter	This parameter is reserved for internal Microsoft use.
-GetPopProtocolLog	SwitchParameter	This parameter is reserved for internal Microsoft use.
-IgnoreDefaultScope	SwitchParameter	This parameter is reserved for internal Microsoft use.
-OrganizationalUnit	String	The OrganizationalUnit parameter filters the results based on the object's location in Active Directory. Only objects that exist in the specified location are returned. Valid input for this parameter is an...
-PrimarySmtpAddress	String	The PrimarySmtpAddress identifies the mailbox that you want to view by primary SMTP email address (for example, navin@contoso.com).
-Properties	String[]	The Properties parameter specifies the properties that are returned in the output of this cmdlet. You can specify multiple values separated by commas.
-PropertySets	PropertySet[]	The PropertySets parameter specifies a logical grouping of properties that are returned in the output of this cmdlet. Valid values are:
-ProtocolSettings	SwitchParameter	The ProtocolSettings switch returns the server names, TCP ports and encryption methods for the following settings:
-ReadIsOptimizedForAccessibility	SwitchParameter	This parameter is reserved for internal Microsoft use.
-ResultSize	Unlimited	The ResultSize parameter specifies the maximum number of results to return. If you want to return all requests that match the query, use unlimited for the value of this parameter. The default value is 1000.
-SendLogsTo	String[]	This parameter is reserved for internal Microsoft use.
-UserPrincipalName	String	The UserPrincipalName parameter identifies the mailbox that you want to view by UPN (for example, navin@contoso.onmicrosoft.com).

Reference facts derived from Microsoft documentation, © Microsoft, licensed CC BY 4.0; restructured with original guidance by serv365.ai.