On Fri, Oct 23, 2009 at 09:28:01AM -0400, John Stoffel wrote:
> Exactly.  And it doesn't scale.  Even at my small 400-500 person
> company we have conflicts with names.  So, if you have two
> john.sm...@foo.com, who gets the email?  Riddle me that batman...

Years ago, I worked on a mail system that used an "intelligent"
algorithm to convert first.l...@domain to the appropriate email
address.  It was particularly smart about misspellings, breaking it
down into phonemes, so you could send mail to johnathon.billings and
it'd get to me.  If the mail system couldn't figure out who you were
asking for, it would generate an SMTP failure with a list of possible
matches in the error, so you'd get a bounce with useful information in
it. 

This was a boon in the days when email sometimes took over a day to
get from site to site, servers making calls late at night when it was
cheap. A mis-spelled name could lead to several days wasted.  Mail
systems had to be built to be as flexible and helpful as possible.

As time passed, this flexibility became an aid to spammers and
difficult to support.  Often, a professor would have business cards
made out with their first.last email address.  Then a new student
would arrive (often, the professor's child) with the same name, and
suddenly mail to that address would generate the bounce I mentioned
before.  We'd have to put in exceptions when that happened, and
usually only AFTER the professor complained.  Other than digging
through logs, we didn't know what people were using as their email
address. 

Mail systems don't have to be that flexible anymore.  People rarely
need to guess at people's email address, and recipients rarely want
their email address to go out into spammer's lists.  In-house, most
places offer directories, either built in to email clients or a
searchable web page.  It doesn't matter what your email address is,
because it's keyed to a larger directory entry that is easy to find.
If you don't already have access to my email address (business card,
previous email, etc.), and don't have access to the directory, for
the most part, there's no reason you'd NEED to email me.

-- 
Jonathan Billings <billi...@negate.org>
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