Spam Filtering
With fraudulent, inappropriate and offensive emails being delivered in vast quantities to businesses every day, anti-spam is a vital component of your network security strategy. Spam wastes network users’ time and network resources, and can also be dangerous. GFI MailEssentials offers anti-spam for Exchange server and other email servers and eliminates the need to install and update anti-spam software on each desktop.
Hardware
Spam Filtering utilizes 11 layers of technology to stop spam and email borne viruses before they reach your network.
Technology includes:
Blacklisting to maintain up-to-date lists of large known spammers, compiled from anti-spam databases and groups. This is a living list that grows daily and is automatically updated automatically for each customer.
Keyword scanning methods include scoring systems for emails based on multiple criteria. If the email score exceeds defined thresholds, it is flagged as spam. We constantly monitor and update our keywords’ master library so you don’t have to.
Checksum technology tracks the number of times a particular message has appeared. If the message frequency exceeds threshold, it is blocked as spam.
Message authenticity check uses multiple algorithms to verify authenticity of a message. Some are simple checks such as “from address,” and others are more complex, relating to SMTP protocol.
Blacklists / Whitelists include Domains, IP’s, and email addresses that the customer wants Blacklisted (blocked) or Whitelisted (allowed through). Lists are maintained per user and per domain.
Rate controls are used to stop denial of service attacks as well as other service attacks.
Anti-virus technology includes:
Anti-virus protectionis a built-in feature of the Spam Filtering hardware. Updates are posted hourly to ensure the latest virus definitions are in place.
File type attachment blocking stops known malicious file types, such as VB script, from entering your network through emails. Attachments are also scanned using the built-in anti-virus protection.
- No software to install
- No hardware to maintain
- No modifications to your existing email system
- Affordable
- Anti-spam - advanced detection filters, low false positives
- Anti-virus - dual layer blocking
- Anti-spoofing – prevent "spoofed" sender addresses
- Anti-phishing – stop attempts to steal confidential information
- Anti-spyware – stop attachments w/ spyware executables
- Easy Set Up
- No user disruption
- Real-time customer support
- Automatic updates for the most current protection
- Set spam policies on a per domain basis
- Provide end-user allow / block lists
- Provide end-user quarantine mail boxes
- Send daily / weekly quarantine box reports
- Set up global quarantine email box (disables personal boxes)
- Allow filtering shut-down on an individual basis
- Low annual fees, no per-user charge
Software
Our anti-spam software offers a fast set-up and a high spam detection rate using Bayesian filtering and other methods – no configuration required, very low false positives through its automatic whitelist, and the ability to automatically adapt to your email environment to constantly tune and improve spam detection. Our software will eliminate over 98% of the spam from your network! It also detects and blocks phishing emails and hard to catch image-spam through a Botnet/Zombie check. In addition to anti-spam filtering and anti-phishing protection, it also adds email management tools to your mail server: disclaimers, mail monitoring, Internet mail reporting, list server, server-based auto replies and POP3 downloading.
- Support for the industry leading messaging platforms including Microsoft Exchange 2000, 2003 and 2007
- Highest spam detection rate (98%) because of its Bayesian filtering technology
- Lowest false positives through its patent pending auto whitelist feature
- Server-based install, no client software required
- Allows users to review email marked as spam from junk mail folder
- #1 server anti-spam solution at unbeatable pricing – over 60,000 installations!
