In message
<5(_dot_)1(_dot_)0(_dot_)14(_dot_)0(_dot_)20030317194213(_dot_)00b44d28(_at_)mail(_dot_)SoftHome(_dot_)net>,
meor(_at_)mail(_dot_)SoftHome(_dot_)net wrote:
How would a newsletter sender find out, if he tried to send a mail to an
unsubscribed user or to an user who has forgotten to whitelist the sender yet
?
The white list exchange, as covered in my overview, works like this:
List subscriber obtains the address of the E-Mail list distributor from a
web site(Ex: news(_at_)cnn(_dot_)com).
List subscriber sends a subscription request E-Mail to the list's
address. This sending of E-Mail places the address news(_at_)cnn(_dot_)com in
the
white list of the list subscriber.
The mailing list attempts to send an E-Mail to the list subscriber.
The mail host sees that news(_at_)cnn(_dot_)com has been added to the white
list and
allows mail to be sent without computation time...
... after which the mose astute portion of the spammer community figures
out that they will increase their odds of delivery dramatically, simply
by sending out their spams with the forged envelope sender address of
<news(_at_)cnn(_dot_)com>.
Keep in mind, as covered in the overview, white lists do not exclude people
from sending mail to an end user, but rather slows the ability to rapidly
send mail to unknown persons.
Except for the trusted ones... or anybody masquerading as trusted one.
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