Spamjadoo - A real time, matured  antispam which not only eradicates
the spam mails at the ESP (Eliminate Spam at Protocol level) but also
ensures to block every unauthorized sender, ensure spam targeted to
you reduces with time, and the  user will always have a  peace of mind
that the machine will not have extra  load of mails. Other anti-spam
products check the mail AFTER receiving it – this encourages spammers
to try harder, which results in more spam, more traffic, more server
loads.