Is anyone using Mailblocks or another similar service to deal with spam? It sounds like a great idea in theory, but wondering how in plays out in real life. Even if it’s only 50-75% effective, I’m almost willing to try. Lord knows I spend enough precious time deleting unwanted emails from unscrupulous vendors trying to sell me a mortgage, penis implant, diet drugs, etc.
Mailblocks service simplifies challenge-response
By Paul Roberts, IDG News Service, 07/28/03
A new e-mail service aims to put an end to spam by collecting the addresses of legitimate e-mail senders on to a master list that will take the “challenge” out of “challenge-response” for many e-mail users.
Four month-old Mailblocks Monday unveiled Challenge/Response 2.0, the latest incarnation of its patented Challenge/Response technology.
Challenge/Response is similar to technology used by other ISPs, including Earthlink.
Using the technology, Mailblocks quarantines inbound e-mail messages to its accounts, sending an e-mail “challenge” message back to the sender with a request to type a seven-digit number into a box.
The challenge requires the human sender to view a unique number displayed on a Web page and transcribe it, something computer-generated spam mailers can’t do.
Once a valid response is received from the sender, the initial e-mail is retrieved from quarantine and delivered. The sender’s e-mail address is then added to the user’s valid sender list, enabling subsequent messages to be received without challenge.