In addition to the optional settings listed below, you should also set a host with the following code in your configuration file:
Settings[Keys.Host] = "mysite.com";
While most generated links are relative to ensure local testing works, some links need to be absolute such as feeds. This setting ensures the correct URL is generated for those links.
Note that this list isn't exhaustive. Some modules used by the recipe may have their own settings that you can set as well. General settings are also available to every recipe.