from the default or suggested thresholds so that it will catch most
junk.
Andrew Burnett
Director of Technology
Saint Gertrude High School
3215 Stuart Ave
Richmond VA 23221
-----Original Message-----
From: A forum for independent school educators
[mailto:ISED-L@LISTSERV.SYR.EDU] On Behalf Of CHRISTOPHER BUTLER
Sent: Thursday, March 19, 2009 10:08 AM
To: ISED-L@LISTSERV.SYR.EDU
Subject: Re: Email Addresses/Spam
Many websites these days use little javascript tools to mask email
addresses
on websites (our site which is managed by Finalsite does this). This
leaves
them clickable to end users, but invisible to bots that scan the raw
html.
Many email addresses that spammers get are obtained by bots that scan
the
raw html of webpages looking for content that is in the form of an
email;
that is, two blocks of text connected by the '@' symbol. The beauty of
the
javascript tool is that the raw html has nothing that looks like an
email
address, but the rendered web page presents something that looks like an
email address and that when clicked acts like a mailto: reference.
As for the other question about filters, currently I'm pretty happy with
our
Barracuda. We've got it locked down pretty tight with very few false
positives and very little leakage of bad emails. It took a while to get
it
to this point but now needs very little maintenance.
Christopher
--=20
Christopher Butler
Academic Technology Director
St. John's Preparatory School
http://www.stjohnsprep.org
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