Hi !!
> Anyone who has run a very active mail server will tell you that
> callouts can use *enormous* amounts of resources if amplified
> appropriately.
does this ever happen ??
> Denial of service would be very easy with only a few
> sites doing callbacks and an agressive forger. The only reason this
> doesn't happen more often is very few sites use callouts (thankfully).
there are more reasons ... if anyone attempts such this attack it
could be stoped very fast just blocking emails from that domain,
which could either happen because admins just realized of that
domain being widely abused or if the admin uses a domain based
blacklist. The chance of success of such this attack is very limited,
that's why spammers try to use as many domains as possible.
--
Best regards ...
The brain you have reached is out of order at this time.
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