New-TenantAllowBlockListSpoofItems

This cmdlet is available only in the cloud-based service.

Use the New-TenantAllowBlockListSpoofItems cmdlet to create spoof entries in the Tenant Allow/Block List.

For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.

Syntax

New-TenantAllowBlockListSpoofItems
   [-Identity] <HostedConnectionFilterPolicyIdParameter>
   -Action <String>
   -SendingInfrastructure <String>
   -SpoofedUser <String>
   -SpoofType <String>
   [-Confirm]
   [-WhatIf]
   [<CommonParameters>]

Description

This cmdlet adds a spoof pair (the combination of the spoofed user and the sending infrastructure) to the Tenant Allow/Block List.

You need to be assigned permissions before you can run this cmdlet. Although this topic lists all parameters for the cmdlet, you may not have access to some parameters if they're not included in the permissions assigned to you. To find the permissions required to run any cmdlet or parameter in your organization, see Find the permissions required to run any Exchange cmdlet.

Examples

Example 1

New-TenantAllowBlockListSpoofItems -SendingInfrastructure contoso.com -SpoofedUser spoofedDomain.com -SpoofType External -Action Allow -Identity Default

This example creates a new spoof pair and generates an Identity for the pair (a random GUID) which can be used as an Id parameter while updating or deleting the spoof pair through Set-TenantAllowBlockListSpoofItems and Remove-TenantAllowBlockListSpoofItems.

Parameters

-Action

The Action parameter specifies whether is an allowed or blocked spoof entry. Valid values are:

  • Allow
  • Block
Type:String
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-Confirm

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.
Type:SwitchParameter
Aliases:cf
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-Identity

The Identity parameter uses the value Default.

Type:HostedConnectionFilterPolicyIdParameter
Position:0
Default value:None
Accept pipeline input:True
Accept wildcard characters:False
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-SendingInfrastructure

The SendingInfrastructure parameter specifies the source of the messages sent by the spoofed sender that's defined in the SpoofedUser parameter. Valid values are:

  • An email domain (for example contoso.com). The domain is found in the reverse DNS lookup (PTR record) of the source email server's IP address.
  • An IP address using the syntax: <source IP>/24 (for example, 192.168.100.100/24). Use the IP address if the source IP address has no PTR record.
  • A verified DKIM domain.
Type:String
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:True
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-SpoofedUser

The SpoofedUser parameter specifies the spoofed sender's email address or domain for the spoof entry.

  • For domains outside your organization (cross-org), use the domain of the email address that appears in the From field of the message.
  • For domains inside your organization (intra-org), use the full email address that appears in the From field of the message.
Type:String
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:True
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-SpoofType

The SpoofType parameter specifies whether this is an internal or external spoof entry. Valid values are:

  • External
  • Internal
Type:String
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection
-WhatIf

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.

Type:SwitchParameter
Aliases:wi
Position:Named
Default value:None
Accept pipeline input:False
Accept wildcard characters:False
Applies to:Exchange Online, Security & Compliance Center, Exchange Online Protection

Inputs

Outputs