New research suggests anti-spam tools are slowly winning the war on junk mail
Email authentication tools can typically reduce incoming spam to just five percent of email, new research has found - a big reduction, given that spam outnumbers legitimate mail by three to one or more.
Experts said the case for deploying such systems is therefore clear, but warned that progress would depend on a broader use of authentication systems and other anti-spam tools.
A study by email security firm IronPort found that when emails were filtered through an anti-spam system and then authenticated by tools such as Sender ID or DomainKeys, just one in 20 spam emails got through.
Email authentication takes big bite of spam