Website Alias bug?

I have configured Mac OS X Server 10.3 with around 20 websites. I set the sites up in the format of: domain.com. I then created an alias for each of www.domain.com. Some domains also had additional alternate names. I chose the top "alias" option and did not specify a path. I can't find documentation on the website alias features and options to verify if this is the correct procedure or not. After configuring and saving the sites work for perhaps 15 seconds and then Apache shuts down. It does not come on again unless I either disable the alias module of Apache or turn off the sites that have aliases. With the alias module off, if you type in www.domain.com, it will direct you to the top-most domain configured in the Server Admin application.