What is a Whitelist and how do I use it?
A Whitelist is a list of e-mail addresses that you want to bypass the filters, in other words, people that you want to get mail from. You can add to this list either by putting in a full e-mail address (joe@example.com), or by just using the domain (@example.com). Remember, if you just use the domain then you will be able to receive mail from anyone that has an address of (@example.com).