If you're suspicious about an email that claims to be from eBay, sign in to My eBay and click the Messages tab. If you don't see the same message there, the email is fake. To report a fake email, forward it to firstname.lastname@example.org.
Concerned about a fraudulent listing? At the bottom of every listing you will find a link saying "Report this item". That takes you to a form you need to fill in to tell us why you are reporting. This includes counterfeit or stolen items, or other suspected fraud.
Need to resolve an issue with a buyer or seller? If you've already attempted to contact the member but were unable to resolve the problem, you can open a case at the resolution center: http://resolutioncenter.ebay.com/ .
Other issues not mentioned above, including password issues, issues logging in, or problems with the site, please contact Customer Support: http://ocs.ebay.com/ws/eBayISAPI.dll?CustomerSupport. If you're having issues with logging in, you can always contact them using the "guest" option.