Spammers exploit anti-spam trap
A survey shows that spammers are the biggest users of a technique designed to find out if e-mail comes from the net address it says it does.
The system was developed to stop mail senders faking the address in e-mail messages to give them an aura of authenticity and fool spam filters.
However, the system is proving good at stopping spoofing and phishing attacks.
Many junk mail messages try to hide their origins by using a fake address for the place on the net where they originated.
In a bid to tackle this and to help sort out legitimate e-mail from the junk, a technology called the Sender Policy Framework (SPF) has been developed.
