Yahoo! Develops Anti-Spam Architecture
prostoalex writes "Yahoo!, the owner of one of the largest e-mail systems in the world, is said to be developing a cryptographic product that will be offered freely to mail servers. 'Domain Keys,' according to the Reuters article, would require the message sender to authenticate in order for message to come across a trusted e-mail network. The idea has been around for ages, however, it required someone from the big league like Yahoo! to step in." While Yahoo! isn't the first name that comes to mind when I think of trusted email, it's still a step in the right direction.
$ telnet mx1.mail.yahoo.com 25
Trying 64.157.4.78...
Connected to mx1.mail.yahoo.com.
Escape character is '^]'.
220 YSmtp mta108.mail.sc5.yahoo.com ESMTP service ready
It looks like they run YSmtp, just like everyone else I know. In all seriousness, I'd imagine there isn't much of Yahoo's infrastructure that isn't highly optimized for Yahoo's own use. I think that Yahoo did a lot with FreeBSD at one time, but I'd presume whatever they have isn't just an out of the box app.
My experience over-all has been excellent, with on minor exception: This was from a google search on "yahoo marketing preferences", and pretty well sums up what happened. They basically reset user marketing preferences, twice in about 4 years if I remember correctly.
It was a bad decision IMHO, but easy enough to reset your preferences, here is yahoo's page on privacy, with links to reset your marketing preferences:
http://privacy.yahoo.com/
Other than this one issue, I've been very happy with Yahoo. Being able to check all my e-mail on one Web site for free is great. Never have lost any e-mails, no problems at all.