Set allowed and blocked sender lists

You can approve or block email from specific email addresses or domains by adding them to the Allow or the Block lists. Lists are maintained at four levels: global, company, domain, and account/user.

The list hierarchy is:

  1. Account/user allow list
  2. Account/user block list
  3. Domain allow list
  4. Domain block list
  5. Company allow list
  6. Company block list
  7. Global allow list
  8. Global block list
  9. Address Book—Addresses that are in the end user’s  Address Book are considered, by default, to be in the Allow list for that user.

The global list is set and maintained by OpenSRS and used primarily in emergency situations, such as an attack, to ensure that the entire system is protected. Under normal operating parameters, the global lists are usually empty.

Company, domain, and account/user lists can be set and maintained using the Control Panel or the MAC (Mailbox Administration Console). Account/users lists can also be accessed by the end-user in the Webmail interface.

When adding addresses and domains to the Allow and Block lists, you can add up to 1000 entries in each list, and you can use up to five wildcards in any given entry. For example, the entry r*.al*.*car*@*foo.com is acceptable, but *r*.al*.*car*@*foo.com is not acceptable because it uses more than five wildcards.

Domains require an asterisk in the following format: *@domain.ext

Creating user-level Safe Senders and Block Senders lists in the Control Panel

To add senders to user-level Safe Senders or Block Senders lists

1. In the Email section of the Control Panel, navigate to the user you want to modify.
For more information, see "Viewing Email user accounts"

2. Click the user name.
The user page opens, displaying the User Settings tab.

3. In the Spam Filtering section, click Edit.

4. Click the plus sign (+) below the Safe Senders or Block Senders heading to display a text field, and enter an email address or domain name. Click the plus sign again to display additional fields. You can add up to 1000 entries in each list.

5. Click Save.

Note: Addresses that are in the user’s Address Book are considered to be in the Safe Senders list for that user by default, even though the Address Book entries are not displayed in the user's allow list. If an Address Book entry is added to the Block Senders list, the address will always be blocked, that is, the user's Block Senders list takes precedence over the Address Book.

Creating domain-level Safe Senders and Block Senders lists in the Control Panel

To add senders to the domain-level Safe Senders or Block Senders lists

1. In the Email section of the Control Panel, click the Email Domains tab.

2. Click the domain that you want to modify and then click the Settings tab.

3. In the Spam Filtering section, click Edt.

4.  Click the plus sign (+) below the Safe Senders or Block Senders heading to display a text field, and enter an email address or domain name. Click the plus sign again to display additional fields. You can add up to 1000 entries in each list.

5. Click Save.

Creating company-level Safe Senders and Block Senders lists in the Control Panel

To add senders to the company Safe Senders or Block Senders list

1. In the Email section of the Control Panel, on your company page, click the Settings tab.

2. In the Spam Filtering section, click Edt.

3.  Click the plus sign (+) below the Safe Senders or Block Senders heading to display a text field, and enter an email address or domain name. Click the plus sign again to display additional fields. You can add up to 1000 entries in each list.

4. Click Save.

Creating user-level Allow and Block lists in the MAC

To add senders to user-level Allow or Block lists

1. Log in to the Mail Administration Console (MAC).
For more information, see "What is the MAC?"

2. Locate the user that you want to edit.
For more information, see “Searching in the Mail Administration Console (MAC)”.

3. Click the user name.

4. In the Spam Settings section, add the addresses or domains to the appropriate text box: Allow or Block.
Be sure to enter each address on a separate line, separated by a carriage return.

5. Click Update.

Note: Addresses that are in the user’s Personal Address Book (PAB) are considered to be in the Allow list for that user by default, even though the PAB entries are not displayed in the MAC's allow list. If a PAB entry is added to the Block list, the address will always be blocked, that is, the MAC's block list takes precedence over the Personal Address Book.

Creating domain-level Allow and Block lists in the MAC

To add senders to the domain-level Allow or Block lists

1. Log in to the Mail Administration Console (MAC).
For more information, see "What is the MAC?"

2. Navigate to the domain that you want to modify. See “Searching in the Mail Administration Console (MAC)”.

3. Add the addresses or domains to the appropriate list box: Allow or Block.
Enter each address on a separate line, separated by a carriage return.

Note: To add all addresses in a domain, be sure to use an asterisk in the following format: *@domain.tld.

4. Click Update.

Creating company-level Allow and Block lists in the MAC

To add senders to the company Allow or Block list

1. Log in to the Mail Administration Console (MAC).
For more information, see "What is the MAC?"

2. In the navigation pane, click your company name.

3. Add the email addresses or domain names to the appropriate text box: Allow or Block.
Enter each address on a separate line, separated by a carriage return.

4. Click Update.

 

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