Overview of our spam filter service

The Emerald Spam Shield is a managed spam filter service.  There is no software to install on your servers, no firewall ports to open.  You simply point your MX records to those we assign you and we filter your email.

Overview of our managed anti spam filter service with email archival

How our spam filter service handles your email

• Email arrives at our filter network from remote systems
• We check the remote system for vaildity before accepting the email.
• The email is then analyzed by 11 different engines and scored.
• Email is then stored for delivery to your system.
• Email arrives at your site, without changes to your mail server.  There is nothing to install on your servers.
• Users receive their mail like normal, but spam has been clearly tagged as such and may be moved to holding folders using local rules.

How our email archival service handles your email

• Prior to filtration all emails are stored on disk in an unmodified format.  Each email is then signed to ensure it cannot be tampered with. 
• Filtration is then performed and the content of the email is indexed for rapid searching.  Default search is online through secure site.  Each DVD comes with a search application and index for the complete archive.  Online and offline archives are searchable.
• Each email is then tagged with the scanner results for policy application.
• Each email class my have a policy assigned to it.  So if you may retain email from certain domains for one time frame, and spam with another time frame.
• DVD-R may be mailed monthly or when a certain archive size is reached
• Outbound email may also be redirected through our servers, or BCC'd at your server to archive outbound mail also

For more information about our email archival solution click here.

Emerald Spam Shield filter statistics

• Capacity to filter over 31 million messages per day
• 84% of total email volume flagged as spam since 05/15/2004
• 10+ million domains crawled by the Emerald Shield List Service (Mar 2005)
  (proprietary list of known-good and known-bad domains)

Spam Filter Options

The Emerald Spam Shield incorporates over 11 different filter engines that can each be turned on or off and customized to handle spam messages in one of four distinct ways:

• Modify the Subject tag with custom text and deliver the modified spam message to the intended recipient
• Forward the spam message to a specified quarantine mailbox for review
• Send a custom rejection message to the sender and delete the spam message
• Delete the spam message with no notification to sender or recipient

This is an example screen shot of how you can edit the handling for each option in the spam filter service.

You have complete control over 11 different engines to filter your email. For any given engine you can choose to simply edit the subject, forward to a specific mailbox, reject the message, or delete it.

Secure Online Account Management

• SSL Secure site for managing your spam filtration settings
• Each configuration change takes effect within 30 minutes
• View a complete summary of your Spam Shield subscription
• Add new domains and deactivate old ones
• Effortlessly copy settings from one domain to another
• Increase or decrease the number of filtered mailboxes
• View the original MX records for a domain
• Add/remove users for each domain
• Manage each RBL your account uses, and assign a level of trust

Click to view a larger screen shot

This is a screen shot of the main domain settings page in the secure management area. For each option you may edit the settings, or click the ? to get help for the topic.

Customized Charts and Reports

• Percentage of spam versus legitimate email
• Number of new spammer domains identified
• View total email and spam volume (daily / weekly / monthly)

Click to view a larger screen shot