Creating a CNAME Record is required for your hosted Landing Page.
In the Source field, enter the subdomain you set up in LaunchRock.
If you chose signup.yoursite.com, enter signup in the Source field.
Enter host.launchrock.com in the Destination field.
Congratulations! Your CNAME record is now configured to point to LaunchRock.
If you have trouble configuring your CNAME records, you can check out the Yahoo!SmallBusiness tutorial page. Or, view a sample message to use when you contact Yahoo!SmallBusiness for assistance.
Once you've modified your A records, it may take up to 72 hours for changes to update live.