Applies to: Exchange Server 2016

This cmdlet is available only in on-premises Exchange Server 2016.

Use the Suspend-Queue cmdlet to stop processing for a queue on a Mailbox server or an Edge Transport server.

Suspend-Queue -Identity <QueueIdentity> <COMMON PARAMETERS>
Suspend-Queue -Filter <String> [-Server <ServerIdParameter>] <COMMON PARAMETERS>
COMMON PARAMETERS: [-Confirm [<SwitchParameter>]] [-WhatIf [<SwitchParameter>]]

This example suspends processing on all queues holding messages for delivery to the domain and that currently have a status of Retry.

Suspend-Queue -Filter {NextHopDomain -eq "" -and Status -eq "Retry"}

This example suspends processing on all queues on the server that have more than 100 messages in the queue.

Suspend-Queue -Server -Filter {MessageCount -gt 100}

The Suspend-Queue cmdlet stops processing on a queue that has a status of Active or Retry. Messages being processed are delivered, but no additional messages leave the queue. When you use the Identity parameter, the queue is suspended only if the identity matches a single queue. If the identity matches more than one queue, you receive an error. To suspend more than one queue in a single operation, you must use the Filter parameter.

For instructions on how to resume suspended queues, see Resume-Queue.

You need to be assigned permissions before you can run this cmdlet. Although all parameters for this cmdlet are listed in this topic, you may not have access to some parameters if they're not included in the permissions assigned to you. To see what permissions you need, see the "Queues" entry in the Mail flow permissions topic.


Parameter Required Type Description




The Filter parameter specifies one or more queues by using OPath filter syntax. The OPath filter includes a queue property name followed by a comparison operator and value, for example, {NextHopDomain -eq ""}. For details about filterable queue properties and comparison operators, see Queue filters and Use the Exchange Management Shell to manage queues.

You can specify multiple criteria by using the and comparison operator. Property values that aren't expressed as an integer must be enclosed in quotation marks (").




The Identity parameter specifies the queue. Valid input for this parameter uses the syntax Server\Queue or Queue, for example, Mailbox01\ or Unreachable. For details about queue identity, see the "Queue identity" section in Use the Exchange Management Shell to manage queues.




The Confirm switch specifies whether to show or hide the confirmation prompt. How this switch affects the cmdlet depends on if the cmdlet requires confirmation before proceeding.

  • Destructive cmdlets (for example, Remove-* cmdlets) have a built-in pause that forces you to acknowledge the command before proceeding. For these cmdlets, you can skip the confirmation prompt by using this exact syntax: -Confirm:$false.

  • Most other cmdlets (for example, New-* and Set-* cmdlets) don't have a built-in pause. For these cmdlets, specifying the Confirm switch without a value introduces a pause that forces you acknowledge the command before proceeding.




The Server parameter specifies the Exchange server where you want to run this command. You can use any value that uniquely identifies the server. For example:

  • Name

  • FQDN

  • Distinguished name (DN)

  • Exchange Legacy DN

If you don't use this parameter, the command is run on the local server.

You can use the Server parameter and the Filter parameter in the same command. You can't use the Server parameter and the Identity parameter in the same command.




The WhatIf switch simulates the actions of the command. You can use this switch to view the changes that would occur without actually applying those changes. You don't need to specify a value with this switch.

To see the input types that this cmdlet accepts, see Cmdlet Input and Output Types. If the Input Type field for a cmdlet is blank, the cmdlet doesn’t accept input data.

To see the return types, which are also known as output types, that this cmdlet accepts, see Cmdlet Input and Output Types. If the Output Type field is blank, the cmdlet doesn’t return data.