YourNet SpamShield

With the ever-increasing use of email as a communications standard, virus attacks and inbox spam have also drastically risen. These unwanted messages in your inbox are not only annoying and distracting, but also potentially dangerous. SpamShield helps you take control again by banishing spam from your inbox.

Our SpamShield is an integrated hardware and software solution that has the power of an enterprise-class solution, and the ease-of-use and affordability that businesses of all sizes demand.

SpamShield includes all the features needed to completely protect your email from all forms of spam attacks. Suspicious emails may be blocked, quarantined, tagged, or delivered based on the policies of the organization or the preferences of the individual user.

Features

Email-Based Threat Protection

SpamShield provides comprehensive protection against the most current email-borne threats that can cripple your network if left unprotected. SpamShield optimizes performance of your email server while utilizing the following protections:

• Anti-spam
• Anti-virus
• Anti-spoofing
• Anti-phishing
• Anti-spyware
• Denial of Service Protection

How SpamShield Works

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FAQs

• How does SpamShield protect against email threats?
  SpamShield, an integrated hardware and software solution, uses a multilayered approach to provide the most comprehensive email protection available against spam, viruses, spoofing, phishing and spyware attacks. An added benefit of SpamShield is the optimized processing of each email to maximize performance and capability to filter millions of messages per day.
  
  SpamShield has 12 explicit defense layers including: Denial of Service and Security Protection, Rate Controls, IP Reputation Analysis, Sender Authentication, Recipient Verification, Virus Protection, Policy (user-specified rules), Fingerprint Analysis, Intent Analysis, Image Analysis, Bayesian Analysis, and a Spam Rules Scoring engine.
• How is email filtered?
  Deployed at the network perimeter, all incoming email must pass through all 12 defense layers of SpamShield before any of it can reach the intended recipients. The defense layers are grouped into two main classes: connection management, which involves dropping incoming mail connections before receiving messages, and mail scanning, which analyzes messages upon receipt. During the filtering process, emails are checked for new and familiar spammer attacks, viruses, and customized administrator policy violations. Based on administrator and user preferences, spam can be tagged, quarantined or blocked.
• Why tag email? What happens to tagged emails?
  Tagging email benefits organizations by easily identifying messages that meet set criteria. Tagged emails are delivered to the recipient with a customizable label, such as [BULK], that is added to the subject of the message.
• Why quarantine email? What happens to quarantined email?
  Quarantining emails is a safeguard that allows for examination of questionable messages prior to accepting or rejecting; typically, quarantined email does turn out to be spam. An administrator can choose two types of email quarantine: global or per user quarantine.
  
  When configured for global quarantine, SpamShield routes all quarantined email to a mailbox specified by the administrator. When configured for per user quarantine, SpamShield stores the email locally and notifies users periodically of their quarantined email. Users can choose to delete quarantined email, forward it to their own mailboxes or whitelist the sender address to prevent future email from being quarantined.
• If I am using Microsoft Exchange, how will SpamShield protect against "dictionary" attacks?
  The Microsoft Exchange Accelerator, uses the Lightweight Dictionary Access Protocol (LDAP) built into Exchange to verify recipients before delivering messages to the Microsoft Exchange Server.
• How does SpamShield protect against virus threats?
  SpamShield provides comprehensive protection against virus threats through three powerful layers. The first layer consists of a well-respected open source virus scanning engine. The second layer is a proprietary virus engine that works to continuously monitor and block the latest Internet threats. The third layer is a set of "real time protection" technologies that enables SpamShield to immediately block the latest virus, spyware and other malware attacks as they emerge without having to wait for a signature to be downloaded onto SpamShield.
• Will I receive a high number of false positives using SpamShield?
  With no tuning, SpamShield is set to minimize false positives, typically at 0.01 percent or less – one of the lowest false positive ratings in the industry. As with any solution that allows for user customization, each customer’s false positive return will vary depending on how the administrator tunes the unit (i.e. a stricter spam score setting may result in more false positives).
• Can SpamShield filter outbound messages?
  Yes. SpamShield filters outbound messages for viruses and basic spam scanning policies.
• How do I block or minimize the amount of invalid bounce messages?
  Invalid bounce messages are non-delivery reports to forged email addresses. To block invalid bounce messages, enable the Invalid Bounce Suppression feature and relay all your outgoing email through the SpamShield.