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Antispam
Spam and malicious email cost millions of dollars in lost productivity, slow down company networks and waste the time of network administrators.
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Introduction
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Email is now an essential business tool for most companies. However, with spam accounting for 90% of all email messages, it is important to have a solution that addresses this problem while ensuring that legitimate messages are delivered to the intended recipient.
Optimal performance
NETASQ’s unique architecture combines two technologies to create a highly effective double barrier to protect against spam. DNS-based blacklists use reputation analysis to identify spam senders and enable your network administrator to create blocking lists to combat them. NETASQ allocates a 'confidence index' to each blacklisted server, allowing your administrator to choose which to interrogate.
A whitelist of legitimate email servers is updated daily to reduce the likelihood of false positives and ensure that legitimate messages arrive safely.
NETASQ’s powerful engine heuristically examines message headers and content, using empirical rule and semantic analysis, detecting counter-measures employed by spam senders and even analysing HTML code. Any new category of spam, including image spam, will be detected. ISP tests have shown that NETASQ’s analytical engine blocks up to 99% of unwanted mail, without affecting legitimate messages. Crucially, these multiple levels of analysis are performed in parallel to offer maximum efficiency without affecting performance.
Ease of use and simplified administration
NETASQ’s combination of unique technologies guarantees optimal efficiency and ensures that valid messages are not lost. Designed to sit at the heart of your network, NETASQ solutions can be installed with minimal disruption to your users.
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