Set-TenantAllowBlockListItems

Reference

Module:: ExchangePowerShell

Applies to:: Exchange Online, Security & Compliance, Exchange Online Protection

Note: The features described in this topic are in Preview, are subject to change, and are not available in all organizations.

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

Use the Set-TenantAllowBlockListItems cmdlet to modify entries in the Tenant Allow/Block List in the Microsoft 365 Defender portal.

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

Syntax

Set-TenantAllowBlockListItems
   -Ids <String[]>
   -ListType <ListType>
   [-Allow]
   [-Block]
   [-ExpirationDate <DateTime>]
   [-ListSubType <ListSubType>]
   [-NoExpiration]
   [-Notes <String>]
   [-OutputJson]
   [<CommonParameters>]

Set-TenantAllowBlockListItems
   -Entries <String[]>
   -ListType <ListType>
   [-Allow]
   [-Block]
   [-ExpirationDate <DateTime>]
   [-ListSubType <ListSubType>]
   [-NoExpiration]
   [-Notes <String>]
   [-OutputJson]
   [<CommonParameters>]

Description

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

Set-TenantAllowBlockListItems -ListType Url -Ids "RgAAAAAI8gSyI_NmQqzeh-HXJBywBwCqfQNJY8hBTbdlKFkv6BcUAAAl_QCZAACqfQNJY8hBTbdlKFkv6BcUAAAl_oSRAAAA" -ExpirationDate (Get-Date "5/30/2021 9:30 AM").ToUniversalTime()

This example changes the expiration date of the specified entry.

Example 2

Set-TenantAllowBlockListItems -ListType Url -ListSubType AdvancedDelivery -Entries *.fabrikam.com -ExpirationDate 9/11/2021

This example changes the expiration date of the URL allow entry for the specified third-party phishing simulation URL. For more information, see Configure the delivery of third-party phishing simulations to users and unfiltered messages to SecOps mailboxes.

Parameters

-Allow

The Allow switch specifies that this is an allow entry for advanced delivery (third-party phishing simulation URLs). You don't need to specify a value with this switch.

Type:	SwitchParameter
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False
Applies to:	Exchange Online, Exchange Online Protection

-Block

The Block switch specifies that this is a block entry for the values you specified by the ListType and Entries parameters. You don't need to specify a value with this switch.

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

-Entries

The Entries parameter specifies the entries that you want to modify based on the ListType parameter value. Valid values are:

Url: The exact URL entry value.
File: The exact SHA256 file hash value.

To enter multiple values, use the following syntax: "Value1","Value2",..."ValueN".

You can't mix URL and file values or allow and block actions in the same command.

You can't use this parameter with the Ids parameter.

Type:	String[]
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False
Applies to:	Exchange Online, Security & Compliance, Exchange Online Protection

-ExpirationDate

The ExpirationDate parameter filters the results by expiration date in Coordinated Universal Time (UTC).

To specify a date/time value for this parameter, use either of the following options:

Specify the date/time value in UTC: For example, "2021-05-06 14:30:00z".
Specify the date/time value as a formula that converts the date/time in your local time zone to UTC: For example, (Get-Date "5/6/2020 9:30 AM").ToUniversalTime(). For more information, see Get-Date.

You can't use this parameter with the NoExpiration switch.

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

-Ids

The Ids parameter specifies the entries that you want to modify. To find this value, use the Get-TenantAllowBlockListItems cmdlet and the Identity property value (a URL or a file hash).

An example value for this parameter is RgAAAAAI8gSyI_NmQqzeh-HXJBywBwCqfQNJY8hBTbdlKFkv6BcUAAAl_QCZAACqfQNJY8hBTbdlKFkv6BcUAAAl_oSPAAAA0.

To enter multiple values, use the following syntax: "Value1","Value2",..."ValueN".

You can't use this parameter with the Entries parameter.

Type:	String[]
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False
Applies to:	Exchange Online, Security & Compliance, Exchange Online Protection

-ListSubType

The ListSubType parameter specifies the subtype for this entry. Valid values are:

AdvancedDelivery
Tenant: This is the default value.

Type:	ListSubType
Position:	Named
Default value:	None
Accept pipeline input:	False
Accept wildcard characters:	False
Applies to:	Exchange Online, Exchange Online Protection

-ListType

The ListType parameter specifies the type of entry. Valid values are:

FileHash
Url

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

-NoExpiration

The NoExpiration switch specifies that the entry should never expire. You don't need to specify a value with this switch.

You can't use this switch with the ExpirationDate parameter.

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

-Notes

The Notes parameters specifies additional information about the object. If the value contains spaces, enclose the value in quotation marks (").

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

-OutputJson

The OutputJson switch specifies whether to return all entries in a single JSON value. You don't need to specify a value with this switch.

You use this switch to prevent the command from halting on the first entry that contains a syntax error.

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