Allow/Block Lists

Use the Configuration > Policy > Allow/Block Lists page to configure lists that define trusted and known bad hosts and senders, and list of Whitelisted URLs.
  • Messages from Allowed Hosts/Senders bypass anti-spam filtering.
  • Messages from Blocked Hosts/Senders are blocked without being scanned for spam or content.
  • URLs in Whitelisted URLs will not be rewritten if ToC Policy is configured to skip those URLs.
Reducing the volume of messages scanned by the Email Appliance can significantly improve system performance.
Note
Message relays known to be spam senders are included in lists used by the IP Reputation Filtering feature, which can be configured on the Policy: Filtering Options page. This page provides the ability to allow or block senders based on sender reputation data compiled by SophosLabs. It is important to ensure that a host never appears simultaneously in the Trusted relay list and the Allowed Hosts list.
  • To add entries to the Allowed hosts/senders, Blocked hosts/senders or Whitelisted URLs list:
    1. Click on the appropriate list on the Configuration > Policy > Allow/Block Lists page. The List Editor dialog box is displayed.
    2. Select the Domains or Senders tab.
    3. In the Add entries text box, enter an IP address, domain, email address or URL, then click Add. Alternatively, use the Upload button.
      Note
      • List entries should be in the form of an IP address, host, domain, or CIDR range, for trusted and known bad hosts, or else an email address for trusted or known bad senders. Entries such as 123.123.123.123, 123.123.0.0/10, host.example.com, @example.com, or user@example.com would all be examples of valid entries.
      • Cannot enter IP Address for Whitelisted URLs.
    4. Click OK.
  • To delete entries from the Allowed hosts/senders, Blocked hosts/senders or Whitelisted URLs list:
    1. Click on the appropriate list on the Configuration > Policy > Allow/Block Lists page. The List Editor dialog box is displayed.
    2. Select the Domains or Senders tab.
    3. Select the check boxes beside the entries that you want to remove.
    4. Click Delete.
    5. Click OK.