# Managing Exclusion Rules

The **Exclusion Rule Manager** section allows Administrators to set a rule that will exclude mails from being processed into the Storage Node repositories. Mails that are excluded will be held in a separate subdirectory on the server for a specified number of days (default is 2 days) before they are deleted by the daily management tasks.

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Each rule will exclude mails that exactly match the criteria of the rule. You can use \* (wildcard values) to create the criteria. Cryoserver does not allow you to review the excluded mails and to re-queue them after changing the rules for Compliance reasons.

1. Navigate to **Email Management** > **Exclusion Rule Manager**.
2. Click the **Create New Rule** button.
3. Enter / Select the required values in the fields. Refer to the table below for field names and descriptions.
4. Click the **Save Rule Details** button.

| Field                 | Description                                                                        |
| --------------------- | ---------------------------------------------------------------------------------- |
| **Rule Name**         | Name of the rule.                                                                  |
| **From**              | Email address(es) from which when an email is received the rule should be applied. |
| **To**                | Email address(es) to which when an email is received the rule should be applied.   |
| **Enabled**           | Specifies whether or not the rule is enabled.                                      |
| **Created By**        | Cryoserver user that created the rule. This is an auto-populated field.            |
| **Created/Edited At** | Time stamp at which the rule was created. This is an auto-populated field.         |

### Editing & Deleting Rules

1. To edit a rule, click the required rule in the **Existing Rules** section and then click the **Edit Rule** button.
2. Edit the values of the required fields and click the **Save Rule Details** button.
3. To delete a rule, click the required rule in the **Existing Rules** section and then click the **Delete Rule** button.