CONFIGURING
Use Domino® private whitelist filters to specify exceptions to blacklist filters. Prior to the introduction of private whitelist filters, to exclude a host from blacklist filter processing, you had to either define the client's mail server as a relay exception -- which creates a security risk, or disable the DNS blacklists filters. Now you can use private whitelist filters to specify the hosts and/or domains to exclude from blacklist processing. Hosts that are specified in private whitelists are exempt from blacklist checks. Whitelisted hosts bypass blacklist filter checks but there are other controls which may prevent the message from being accepted. Members of the private whitelist are still subjected to connection, relay, sender, and recipient controls.
Before you begin
Make sure you have previously set up a Configuration Settings document for the server.
About this task
Whitelists can be used independently of blacklists.
When private whitelists are enabled, the SMTP listener task compares hosts that may be subject to relay enforcement against the defined private whitelist. If there is a match, the private blacklist, DNS whitelists, and DNS blacklists are skipped. Otherwise, processing continues beginning with the private blacklist.
Using private whitelist filters
Procedure
1. From the Domino Administrator, click the Configuration tab and expand the Messaging section.
2. Click Configurations.
3. Select the Configuration Settings document for the server on which you are enabling private whitelist filters.
4. Click Router / SMTP -> Restrictions and Controls -> SMTP Inbound Controls.
5. Complete these fields in the Private Whitelist Filters section and then click Save and Close.
Choose Enabled to allow the SMTP listener task to determine if connecting hosts have been whitelisted, that is, to determine whether they have been entered in the field Whitelist the following hosts.
By default this setting is disabled.
IP ranges and masks are supported. Wildcards can be used except within ranges.
The SMTP listener task maintains a statistic to keep a cumulative count of the number of connections accepted from whitelisted hosts. The statistic, SMTP.PrivateWL.TotalHits, can be viewed using the Domino Administrator client, or by issuing this command from the server console:
show stat SMTP
Related tasks Working with private blacklists for SMTP connections Restricting inbound SMTP connections