New-TenantAllowBlockListItems
This cmdlet is available only in the cloud-based service.
Use the New-TenantAllowBlockListItems cmdlet to add entries to the Tenant Allow/Block List in the Microsoft Defender portal.
For information about the parameter sets in the Syntax section below, see Exchange cmdlet syntax.
Syntax
New-TenantAllowBlockListItems
-Entries <String[]>
-ListType <ListType>
[-ExpirationDate <DateTime>]
[-Allow]
[-Block]
[-ListSubType <ListSubType>]
[-LogExtraDetails]
[-Notes <String>]
[-OutputJson]
[-SubmissionID <String>]
[<CommonParameters>] New-TenantAllowBlockListItems
-Entries <String[]>
-ListType <ListType>
[-NoExpiration]
[-Allow]
[-Block]
[-ListSubType <ListSubType>]
[-LogExtraDetails]
[-Notes <String>]
[-OutputJson]
[-SubmissionID <String>]
[<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
New-TenantAllowBlockListItems -ListType Url -Block -Entries ~contoso.com~This example adds a URL block entry for contoso.com and all subdomains (for example, contoso.com, www.contoso.com, xyz.abc.contoso.com, and www.contoso.com/b). Because we didn't use the ExpirationDate or NoExpiration parameters, the entry expires after 30 days.
Example 2
New-TenantAllowBlockListItems -ListType FileHash -Block -Entries "768a813668695ef2483b2bde7cf5d1b2db0423a0d3e63e498f3ab6f2eb13ea3","2c0a35409ff0873cfa28b70b8224e9aca2362241c1f0ed6f622fef8d4722fd9a" -NoExpirationThis example adds a file block entry for the specified files that never expires.
Example 3
New-TenantAllowBlockListItems -Allow -ListType Url -ListSubType AdvancedDelivery -Entries *.fabrikam.com -NoExpirationThis example adds a URL allow entry for the specified third-party phishing simulation URL with no expiration. For more information, see Configure the advanced delivery policy for third-party phishing simulations and email delivery to SecOps mailboxes.
Parameters
-Allow
The Allow switch specifies that you're creating an allow entry. You don't need to specify a value with this switch.
You can't use this switch with the Block switch.
Note: See Allow entries in the Tenant Allow/Block List, before you try to create an allow entry.
You can also use allow entries for third-party phishing simulation URLs with no expiration. For more information, see Configure the advanced delivery policy for third-party phishing simulations and email delivery to SecOps mailboxes.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
-Block
The Allow switch specifies that you're creating a block entry. You don't need to specify a value with this switch.
You can't use this switch with the Allow switch.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
-Entries
The Entries parameter specifies the values that you want to add to the Tenant Allow/Block List based on the ListType parameter value:
- FileHash: Use the SHA256 hash value of the file. In Windows, you can find the SHA256 hash value by running the following command in a Command Prompt:
certutil.exe -hashfile "<Path>\<Filename>" SHA256. An example value is768a813668695ef2483b2bde7cf5d1b2db0423a0d3e63e498f3ab6f2eb13ea3. - Sender: A domain or email address value. For example,
contoso.comormichelle@contoso.com. - URL: Use IPv4 or IPv6 addresses or hostnames. Wildcards (* and ~) are supported in hostnames. Protocols, TCP/UDP ports, or user credentials are not supported. For details, see URL syntax for the Tenant Allow/Block List.
To enter multiple values, use the following syntax: "Value1","Value2",..."ValueN".
For senders, files, and URLs the maximum number of allow entries for each type is 500, and the maximum number of block entries for each type is 500 (1000 entries total for each type).
The maximum number of characters in a file entry is 64 and the maximum number of characters in a URL entry is 250.
You can't mix value types (file, sender, or URL) or allow and block actions in the same command.
In most cases, you can't modify the URL, file, or sender values after you create the entry. The only exception is allow URL entries for phishing simulations (ListType = URL, ListSubType = AdvancedDelivery).
| Type: | String[] |
| Position: | Named |
| Default value: | None |
| Required: | True |
| 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 |
| Required: | False |
| 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: Use this value for phishing simulation URLs. For more information, see Configure the advanced delivery policy for third-party phishing simulations and email delivery to SecOps mailboxes.
- Tenant: This is the default value.
| Type: | ListSubType |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
-ListType
The ListType parameter specifies the type of entry to add. Valid values are:
- FileHash
- Sender
- Url
| Type: | ListType |
| Position: | Named |
| Default value: | None |
| Required: | True |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
-LogExtraDetails
{{ Fill LogExtraDetails Description }}
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, 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.
This switch is available to use in the following scenarios:
- With the Block switch.
- With the Allow switch where the ListType parameter value is URL and the ListSubType parameter value is AdvancedDelivery.
You can't use this switch with the ExpirationDate parameter.
| Type: | SwitchParameter |
| Position: | Named |
| Default value: | None |
| Required: | True |
| 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 |
| Required: | False |
| 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 |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
-SubmissionID
This parameter is reserved for internal Microsoft use.
| Type: | String |
| Position: | Named |
| Default value: | None |
| Required: | False |
| Accept pipeline input: | False |
| Accept wildcard characters: | False |
| Applies to: | Exchange Online, Security & Compliance, Exchange Online Protection |
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