Today, almost all businesses rely on email for part of their communications needs. Yet a staggering proportion of email messages are destined not to communicate, but to do damage.
Industry estimates suggest that as much as 70 per cent of all email traffic is technically illegitimate: it is either wrongly addressed, contains malformed SMTP packets, or is part of a denial of service attack or and attempt to harvest corporate email addresses.
Conventional anti-spam technologies struggle to cope with this increasing volume of illegitimate messages, not least because they have to scan the content of each email to determine whether or not it is spam. Doing so - as well as storing and processing large volumes of unwanted messages - robs companies of valuable IT resources Controlling spam
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