Microsoft pushes spam-filtering technology

By Joris Evers
http://news.com.com/Microsoft+pushes+spam-filtering+technology/2100-7355_3-5
758365.html

Story last modified Wed Jun 22 18:25:00 PDT 2005

If your e-mail does not have a Sender ID, Microsoft wants to junk your
message.

Sometime around November, Hotmail and MSN will flag as potential spam those
messages that do not have the tag to verify the sender, Craig Spiezle, a
director in the technology care and safety group at the software maker said
Wednesday. The move is meant to spur adoption of Sender ID, he said.

Sender ID is a specification for verifying the authenticity of e-mail by
ensuring the validity of the server from which the e-mail came. While the
purpose of curbing junk mail may be laudable, the debate on how to stop the
tide of junk mail is still ongoing. According to Microsoft, up to 90 percent
of e-mail is spam.

Critics say Sender ID, which includes technology developed by Microsoft, is
not an accepted standard and has many shortcomings. Also, there are
technologies that compete with Sender ID, such as Yahoo's DomainKeys.

"We think Microsoft is trying to strong-arm the industry into the adoption
of an incomplete and not accepted standard," said Dave Rand, chief
technologist for Internet content security at security software company
Trend Micro.

Microsoft's move increases pressure on e-mail senders to adopt Sender ID.
The technology requires Internet service providers, companies and other
Internet domain holders to publish so-called SPF (Sender Policy Framework)
records to identify their mail servers.

About 1 million domains currently publish SPF records, Microsoft said.
That's far from the 71.4 million registered domains worldwide at the end of
last year. Still, because some large e-mail senders such as AOL support
Sender ID, about 30 percent of e-mail today carries Sender ID information,
according to e-mail filtering company MessageLabs.

Criticism for the technology
Sender ID has not been a success because it is not very highly regarded,
said Ray Everett-Church, co-founder of the Coalition Against Unsolicited
Commercial E-mail and co-author of the book "Fighting Spam for Dummies."

"Microsoft has been trying to shove Sender ID down the throats of the
Internet community for several years now, to little effect," he said.

Microsoft's unilateral move may hurt Internet users, he said. "Sender ID
isn't widely deployed, meaning that average users are now at risk for having
their legitimate e-mail tagged as spam when they send messages to Hotmail
users."

Experts say one of the problems with Sender ID is that it doesn't work with
e-mail forwarding services. The basic premise of Sender ID is to check if an
e-mail that claims to be coming from a certain Internet domain is really
being sent from the e-mail servers associated with that domain.

"If you receive mail forwarded through, for example, a university alumni
account, the Sender ID check fails," said Matt Sergeant, a senior antispam
technologist at MessageLabs.

The Internet Engineering Task Force, a standard-setting body, dissolved a
working group on Sender ID in September. Still, Microsoft is plowing ahead
with Sender ID, perhaps in a last-ditch effort to make good on a promise by
Chairman and Chief Software Architect Bill Gates to can spam by 2006.

"All domain holders and e-mail senders should be publishing SPF records and
planning to do that now if they want to improve the legitimacy of their
mail, plus protect their domain and consumers. It is the responsible thing
to do," Microsoft's Spiezle said.

Turning on the filters at Hotmail and MSN will give e-mail senders a reason
to adopt Sender ID, Spiezle said. Without an incentive, many have said that
they won't publish SPF records, he said. "We're in a catch-22," he said.
"What we're trying to do is to do the right thing by giving everyone advance
notice."

However, this Microsoft effort to push adoption of Sender ID is likely to
fail, certainly with such a short deadline, said Jonathan Penn, an analyst
at Forrester Research. "Hotmail is in no position to dictate that
organizations adopt Sender ID," he said.

Adopting Sender ID or any other technology requires time and money, Penn
said. "Company budgets are on a yearly cycle, and most of them have no money
for such a project this year," he said.

Microsoft argues that publishing SPF records is simple. It usually does not
require new hardware or software and the most arduous part is doing an
inventory of mail servers and the subsequent maintenance of the record,
Spiezle said.


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