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Welcome to TMDA!
What is it?
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TMDA (tagged message delivery agent)
is the free answer to your spam woes. Unlike other filters that look for
keywords such as "viagra", "sweepstakes", and
"lesbians"; TMDA uses a simple, but highly reliable method for
determining which e-mails come from real people... it asks them!
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TMDA asks people if they are real?
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Yes, it is called a "challenge/response method".
When someone sends mail to a TMDA guarded e-mail address for
the first time, instead of just blindly dumping the message
in your in-box, TMDA puts it in a special quarantine area
and sends a
"challenge"
back to the author.
The challenge is just an e-mail that briefly explains
the system and asks the user to reply to the challenge (this
is the "response" part). Once TMDA receives the
response, it releases the original message from quarantine
and adds the sender to a list of people from which it will
accept mail. Any future messages from that user will be accepted
without another challenge.
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How does that help?
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Spammers typically put fake e-mail addresses on their spam.
They don't want you to reply to them. The address they use
is bad, so they never receive TMDA's challenge, they never
get to respond, the message is never released from quarantine,
and it never makes it to your in-box. Instead, it sits around
and gathers dust until the system throws it away.
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Great! How do I get it?
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"Getting it" is easy, simply click the link at
the end of this page to install the system. But before you
do, please take a few minutes and look over the following
FAQs (frequently asked questions). TMDA is a radically different
way to handle your mail, so it is best to understand some
of the finer details before you proceed.
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