Thursday, January 6, 2011
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Google has been an early and consistent supporter of email authentication technologies, which help ensure senders are who they say they are, and in turn help to curb spam. Since we launched Gmail in 2004, we have supported email-signing standards such as DomainKeys and DomainKeys Identified Mail (DKIM) to help validate outbound mail with digital signatures. On the inbound side, to help our users identify email from verified senders, in 2008 we worked with eBay and PayPal to authenticate their mail with DKIM and block all unsigned messages purportedly from those companies destined for Gmail users.
But the spam and phishing epidemics aren’t letting up – every day Gmail filters out billions of unwanted messages from our users’ inboxes – so we’ve been focused on creating helpful tools and working with the email industry to bring solutions that will help our customers. Email authentication is an important mechanism to verify senders’ identities, giving users a tool to recognize potential spam messages. In addition, many mail systems can display whether a received message is DKIM-verified, which helps spam filters verify and assess the overall reputation of the sender’s domain: messages from untrusted senders are treated more skeptically than those from good senders.
Today, we mark another notch in the spam-fighting belt: we’re making it possible for all Google Apps customers to sign their outgoing messages with DKIM, so their sent mail is less likely to get caught up in recipients’ spam filters. Google Apps is the first major email platform – including on-premises providers – to offer simple DKIM signing at no extra cost. Once again, the power of the cloud has made it possible for us to bring this feature to millions of customers quickly and affordably.
Starting today, all Google Apps administrators can enable DKIM signing in the “Advanced Tools” tab of the control panel. As more email providers around the world support DKIM signing, spam fighters will have an even more reliable signal to separate unwanted mail from good mail. We’re pleased to let millions more organizations use DKIM with this improvement.
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