chris_jt - 7:50 am on Feb 11, 2004 (gmt 0)
The information isn't entirely useless. In the case of suspected criminal activity, you can also open a complaint with the FCC and US Secret Service. Visit their website for more information. In support of the moderator's reply, you can check with your local law enforcement and find out if they have a "computer crime" division. If so, they should be able to provide you with guidance on how to report suspected criminal activity. Taking such proactive measures can have an additional benefit of providing proof of your service's conduct should it come into question.
As another approach, there are components out there that can be used to perform dynamic reverse lookups on domains and IP's to check their validity. Specific components, however, are subject to the type of technology being used and also subject to your host provider's willingness to support them. Check with your hosting partner for more information.
In the case of emails, we use a component which checks the validity of the sender's domain. The component also checks the ability of the email address to receive emails to ensure the submitter is providing a valid email address. In addition, we also provide a publicly accessible "No Spam" policy.