New-TenantAllowBlockListSpoofItems
This cmdlet is available only in the cloud-based service.
Use the New-TenantAllowBlockListSpoofItems cmdlet to create spoofed sender entries in the Tenant Allow/Block List.
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.
Syntax
Default (Default)
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 article lists all parameters for the cmdlet, you might not have access to some parameters if they aren't 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 -Identity Default -Action Allow -SendingInfrastructure contoso.com -SpoofedUser bob@contoso.com -SpoofType External
This example creates an allow entry for the sender bob@contoso.com from the source contoso.com.
Parameters
-Action
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
The Action parameter specifies whether is an allowed or blocked spoofed sender entry. Valid values are:
- Allow
- Block
Parameter properties
| Type: | String |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-Confirm
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
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.
Parameter properties
| Type: | SwitchParameter |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
| Aliases: | cf |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | False |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-Identity
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
The Identity parameter uses the value Default.
Parameter properties
| Type: | HostedConnectionFilterPolicyIdParameter |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
(All)
| Position: | 0 |
| Mandatory: | True |
| Value from pipeline: | True |
| Value from pipeline by property name: | True |
| Value from remaining arguments: | False |
-SendingInfrastructure
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
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. /24 is the only available and maximum subnet depth.
- A verified DKIM domain.
Parameter properties
| Type: | String |
| Default value: | None |
| Supports wildcards: | True |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-SpoofedUser
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
The SpoofedUser parameter specifies the email address or domain for the spoofed sender 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.
For spoofed senders, the maximum number of entries is 1024.
Parameter properties
| Type: | String |
| Default value: | None |
| Supports wildcards: | True |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-SpoofType
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
The SpoofType parameter specifies whether this is an internal or external spoofed sender entry. Valid values are:
- External
- Internal
Parameter properties
| Type: | String |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | True |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
-WhatIf
Applicable: Exchange Online, Security & Compliance, Exchange Online Protection
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.
Parameter properties
| Type: | SwitchParameter |
| Default value: | None |
| Supports wildcards: | False |
| DontShow: | False |
| Aliases: | wi |
Parameter sets
(All)
| Position: | Named |
| Mandatory: | False |
| Value from pipeline: | False |
| Value from pipeline by property name: | False |
| Value from remaining arguments: | False |
CommonParameters
This cmdlet supports the common parameters: -Debug, -ErrorAction, -ErrorVariable, -InformationAction, -InformationVariable, -OutBuffer, -OutVariable, -PipelineVariable, -ProgressAction, -Verbose, -WarningAction, and -WarningVariable. For more information, see about_CommonParameters.