How many times have you been tricked by phishing emails from ebay or Paypal? Gmail has gone a step further to protect users by authenticating all emails from these services, such that they are rejected even before they reach your email inbox.
DomainKeys is an e-mail authentication system designed to verify the DNS domain of an e-mail sender and the message integrity. The DomainKeys specification has adopted aspects of Identified Internet Mail to create an enhanced protocol called DomainKeys Identified Mail (DKIM).
eBay and PayPal will now ensure all their email is signed with DomainKeys and DKIM and hence, Gmail can now easily detect and reject fake emails that don’t authenticate. This is a welcome step by Google, Ebay and Paypal that will really help to protect personal and financial information and now lesser number of people will be duped and subject to fraud by these phishing scams.
The best way I use to avoid phishing is not to click any email link, but rather type the domain name in the browser location bar (look for typos) before visiting the site. You can also report fake Paypal emails and spoof sites to Paypal. Is your gmail spam down?