OS X Tiger

1. Under the Apple menu, select "System Preferences...".

2. Under Internet & Network, click on the Network icon.

3. Click the "Configure..." button.

Your default connection method (i.e. Built-in Ethernet) will be highlighted. For alternate connection methods (i.e. AirPort), repeat this step and the following step.

4. Type in Mailshell addresses in the DNS Servers field, then click Apply Now.

Before proceeding, please write down your current DNS settings, so you may revert to your original settings at any time.

Preferred DNS server address for Mailshell is: 209.157.66.245

Alternate DNS server address for Mailshell is: 74.208.45.33