Set allowed and blocked sender lists

Shortcut to this article: opensrs.help/allow-block-list

The allow/blocklists are maintained at four levels- global, company, domain, and account/user. You can approve or block emails from specific email addresses or domains by adding them to the allow or the blocklists.

Allow/blocklist hierarchy

  • Account/user allow list
  • Account/user block list
  • Domain allow list
  • Domain block list
  • Company allow list
  • Company block list
  • Global allow list
  • Global block list
  • Address book

The allow or block list added at the user level has the highest priority over the domain level allow or block list. The domain-level settings take precedence over the company level and company over the global list. Addresses that are in the user's personal address book are considered to be in the safe sender's 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.

The global list is set and maintained by OpenSRS and used primarily in emergencies, such as an attack, to ensure that the entire system is protected. Under normal operating parameters, the global lists are usually empty. The company, domain, and account/user lists can be set and maintained using the Reseller Control Panel or the MAC. The end-user can also access the account/user lists in their 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 wildcard characters to represent parts of the entry that you wish to add. 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. To block all emails from a domain, use the format *@domain.tld. 

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Creating user-level safe senders and block senders

Reseller Control Panel

  1. In the Email section of the Reseller Control Panel, navigate to the user you want to modify.
  2. Click on the user name.
  3. The user page opens, displaying the User settings tab.
    user-settings.png
  4. In the Spam filtering section, click Edit.
  5. 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 view additional fields. You can add up to 1000 entries in each list.
  6. Click Save.
    block-rcp.png

MAC

  1. Log in to the Mail Administration Console (MAC)
  2. Locate the user that you want to edit. 
  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 entry on a separate line.
    allo-block.png
  5. Click Update.

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Creating domain-level safe senders and block senders

Reseller Control Panel

  1. In the Email section of the Reseller Control Panel, click the Email domains tab.
  2. Click the domain that you want to modify and then click the Settings tab.
    domain-block.png
  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 view additional fields. You can add up to 1000 entries in each list.
  5. Click Save.domain-rcp.png

MAC

  1. Log in to the Mail Administration Console (MAC).
  2. Navigate to the domain that you want to modify. 
  3. Add the addresses or domains to the appropriate list box: Allow or Block. Enter each entry on a separate line. To add all addresses in a domain, be sure to use an asterisk in the following format: *@domain.tld. 
    domain-mac.png
  4. Click Update.

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Creating company-level safe senders and block senders

Reseller Control Panel

  1. In the Email section of the Reseller Control Panel, on your company page, click the Settings tab. 
    company-settings.png
  2. In the Spam filtering section, click Edit.
  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 view additional fields. You can add up to 1000 entries in each list.
  4. Click Save
    company-rcp.png

MAC

  1. Log in to the Mail Administration Console (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 entry on a separate line.
    domain-mac.png
  4. Click Update.

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