SMTP Client Access Controls

The SMTP Client Access Controls define which servers are allowed to connect to the mail services to send mail using SMTP.

The rules are applied in the order shown top to bottom, the top being the first and the bottom being the last. Once a rule matches a client, the associated action is taken and the rule matching is stopped. When you create a new rule it will automatically be listed in the order that the mail system applies them. You cannot change this order. Acceptable client definitions are domain.com, full IP address (xxx.xxx.xxx.xxx), or network IP address (xxx.xxx.xxx.). Using the example from the screen-shot above, corp.guardiandigital.com was given access to use the mail server. However, two machines were blocked out, machine1.corp.guardiandigital.com and 192.168.3.34.

To add a new SMTP Client Access Control click the New SMTP Client Access Control link. A new window will appear labeled, Create SMTP Client Access Control.

Client

This is the client machine or network that will be the focus of this access control item.

Actions

This is a pull-down menu that determines if this access control item will be used to accept the message the reject it.

Once the fields have been filled, click Create Check and the new rule will appear on the main screen below SMTP Client Access Controls.

To edit or delete an access control entry, click the Edit link. This will bring up a new window with the option to edit or delete the access control entry.

• [NOTE:]Access control based on SMTP Client has a higher priority than that of the Recipient Address, but lower than that of Sender Address.