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Blocked senders setting

You can automatically reject messages from individual addresses or entire domains by adding those addresses or domains to a Blocked senders list.

The Blocked senders setting applies to all users in an organizational unit. Users in child organizations inherit settings from the parent organization.

Set up a blocked senders list
  1. Sign in to your Google Admin console.

    Sign in using your administrator account (does not end in @gmail.com).

  2. From the Admin console dashboard, go to Appsand thenGoogle Appsand thenGmailand thenAdvanced settings.

    Tip: To see Advanced settings, scroll to the bottom of the Gmail page.

  3. On the left, select an organization.
  4. Scroll to the Blocked senders section:
    • If the status is Not configured yet, hover over the setting and click Configure. 
    • If the status is Locally applied or Inherited, hover over the setting and click Edit or Add another to edit or add another setting.
  5. For additional instructions and guidelines, see the sections below.
  6. Click Add Setting or Save to close the dialog box.
  7. At the bottom, click Save.

It can take up to an hour for changes to propagate to user accounts. You can track prior changes under Admin console audit log.

Add addresses or domains to the list

After performing the steps above:

Note: When you enter addresses or domain names, Gmail checks these against the From: part of the message header, not the envelope sender (or Return-Path section of the message header). Therefore, the From: sender must exactly match an address or domain you enter.

  1. Click Use existing or create a new one.
  2. Select the name of an existing list, or enter a custom name for a new list in the Create new list field, and then click Create.
  3. Hover over the list name, and click Edit.
  4. Click Add to add email addresses or domains to the list.
  5. Enter the address or domain name, and click Save.
  6. To add more email addresses or domains to the list, repeat steps 4 and 5.
Edit the default rejection notice

In this field, you can enter customized text for the rejection notice.

Add exceptions to your list 

In the Options section, select Bypass this setting for messages received from addresses or domains within these approved sender lists to set up a new approved sender list or to reuse a list that you've already created. An approved sender list lets you approve messages from specific addresses or domains. When you set up an approved sender list in the Blocked senders setting, messages from domains or email addresses in the list will bypass the Blocked senders setting. Note: Other settings can still cause the message to be blocked.

Note: If a message from an approved sender contains a virus or is part of an email attack, Google's virus filters will still prevent it from reaching your users.

To create an approved sender list:

  1. Check the box in the Options section ("Bypass this setting for messages received from addresses or domains within these approved sender lists").
  2. Click the Use existing or create a new one option.
  3. Select the name of an existing list, or enter a custom name for a new list in the Create new list field, and then click Create.
  4. Hover over the list name, and then click Edit.
  5. Click Add to add email addresses or domains to the list.
  6. Enter an email address or the domain name; for example, solarmora.com.

    Note: Click Do not require sender authentication to bypass the Blocked senders setting for approved senders that do NOT have authentication, such as SPF or DKIM enabled. Use this option with caution; it can potentially lead to spoofing.
  7. Click Save.
  8. To add more email addresses or domains to the list, repeat steps 5–7.
When you're finished, click Add Setting at the bottom of the dialog box, and then, at the bottom, of the page click Save.
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