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.

Similar to other email security settings, the blocked senders setting applies to all users in an organizational unit. Users within child organizations inherit the settings you create for the parent organization.

Set up a blocked senders list
  1. Sign in to the Google Admin console
     
  2. Click Google Apps > Gmail > Advanced settings
  3. In the Organizations section, highlight your domain or the organizational unit for which you want to configure settings (see Configure email settings for an organizational unit for more details).
     
  4. Scroll down to the Blocked senders section:
     
    • If the setting's status is Not configured yet, click the Configure button near the right edge of the window (the Add setting dialog box opens).
    • If the setting's status is Locally applied, click Edit to edit an existing setting (the Edit setting dialog box appears), or click Add another to add a new setting (the Add setting dialog box appears).
    • If the setting’s status is Inherited, click View to view the inherited setting, or click Add another to add a new setting (the Add setting dialog box opens).
       
  5. See the sections below for additional instructions and guidelines. When you are finished making changes, click Add Setting or Save to close the dialog box.
     
  6. Click Save changes at the bottom of the Email settings page.
Add addresses or domains to the list

After performing the steps above:

  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. Move your pointer over the list name, and click Edit.
  4. To add email addresses or domains to the list, click Add.
  5. Enter the address or domain name, and click Save.
  6. If you want to add more email addresses or domains to the list, repeat steps 4 and 5.
Edit the default rejection notice

In this field, you have the option to enter customized text for the rejection notice.

Add exceptions to your list 

Click the Options check box to set up a new approved sender list or to reuse a list that you have already created. An approved sender list enables you to 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 that other settings may still cause the message to be blocked.)

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. Click the check box in the Options section.
  2. Click Use existing or create a new one.
  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. Move your pointer over the list name, and then click Edit.
  5. To add email addresses or domains to the list, click Add.
  6. Enter an email address or the domain name (for example, solarmora.com).

    Note: Click Do not require sender authentication if you want 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 as it can potentially lead to spoofing.
     
  7. Click Save.
  8. If you want to add more email addresses or domains to the list, repeat steps 5-7.
 
When you're finished, be sure to click Add Setting at the bottom of the dialog box, and then click Save changes at the bottom of the Email settings page to confirm your changes.