> For the complete documentation index, see [llms.txt](https://docs.realmjoin.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.realmjoin.com/automation/runbooks/runbook-references/org/mail/add-or-remove-tenant-allow-block-list.md).

# Add Or Remove Tenant Allow Block List

Add or remove a Tenant Allow/Block List entry

### Description

Adds a sender, URL or file hash to the Tenant Allow/Block List of Defender for Office 365, or removes it again. New entries expire after the chosen number of days, so temporary exceptions clean themselves up.

### Location

Organization → Mail → Add Or Remove Tenant Allow Block List

**Full Runbook name**

rjgit-org\_mail\_add-or-remove-tenant-allow-block-list

### Details

| Property         | Value                                                                             |
| ---------------- | --------------------------------------------------------------------------------- |
| Version          | 1.0.1                                                                             |
| Required modules | <p>RealmJoin.RunbookHelper (>= 0.8.10)<br>ExchangeOnlineManagement (>= 3.9.2)</p> |
| Schedulable      | no                                                                                |

### Permissions

#### Application permissions

* **Type**: Office 365 Exchange Online
  * Exchange.ManageAsApp
    * *Runs Get/New/Remove-TenantAllowBlockListItems in the app-only Exchange Online session*

#### RBAC roles

* Exchange Administrator
  * *Required for the app-only Exchange Online session to manage Defender Tenant Allow/Block List entries*

### Parameters

#### Entry

What to allow or block: a domain, an email address, a URL, or a file hash, matching the entry type.

| Property      | Value  |
| ------------- | ------ |
| Required      | true   |
| Default Value |        |
| Type          | String |

#### ListType

Sender takes a domain or email address, URL a web address, File hash a SHA-256 hash.

| Property      | Value  |
| ------------- | ------ |
| Required      | false  |
| Default Value | Sender |
| Type          | String |

#### Block

Block list rejects matching mail, URLs or files; Allow list lets them through even when Defender would filter them.

| Property      | Value   |
| ------------- | ------- |
| Required      | false   |
| Default Value | True    |
| Type          | Boolean |

#### Remove

Add the entry creates it with the chosen expiry; Remove the entry deletes the existing entry with the same value.

| Property      | Value   |
| ------------- | ------- |
| Required      | false   |
| Default Value | False   |
| Type          | Boolean |

#### DaysToExpire

Days until a new entry expires and is removed automatically.

| Property      | Value |
| ------------- | ----- |
| Required      | false |
| Default Value | 30    |
| Type          | Int32 |

[Back to Runbook Reference overview](/automation/runbooks/runbook-references.md)


---

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