EMAIL SERVICES
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 Unlike most spam filtering solutions, which use one or two spam-classification techniques, MX Logic's
Stacked Classification FrameworkSM aggregates the most effective spam filters and techniques in the
industry, currently leveraging the strengths of five spam-fighting filters:
- Bayesian-Statistical algorithms : identify and quantify the possibility that an email message is spam.
- Heuristics : Thousands of proprietary rules of thumb recognise characteristics of spam.
- Distributed Checksum Clearinghouses : Takes a checksum, or fingerprint, of all email messages it
sees, and places those fingerprints in a database. If the database recognises a large number of
exact matches or at least very similar fingerprints, then those fingerprints are likely to indicate spam.
- Distributed Deny Lists : Third-party, distributed blacklists of known spammer IP addresses and
identities from which mail should not be allowed
- Domain and End User Level Black and White Lists : Maintained by Caladan or their customers,
these customized lists detail email addresses, domains or IP addresses from which mail is and is
not allowed or should always be allowed.
Each of the five filters dynamically calculate the spam probability of every message. Through an
aggregation and analysis of these spam-likelihood scores, the patent-pending, multi-layered spam
detection system provides extremely effective spam blocking.
MX Logic provides Caladan with continual updates to the filters, while also introducing new filtering
techniques to stay on top of spammers. All Email Defence customers receive anti-spam.
Anti-Virus from Sophos
Powered by leading virus-scanning technology Sophos®, email is scanned for viruses before it enters or
leaves your network, providing continuous proactive virus protection. Administrators can determine specific
actions for email containing a virus including strip, quarantine, and deny. Anti-virus is available as an
optional upgrade. Content and Attachment Filtering
Automatically filter and quarantine inappropriate content and attachments before they enter a customer's
organisation or family's mailboxes. Filters can be created, altered, enhanced, neutralised or deleted.
Customers can configure content and attachment filtering through an intuitive web-based Administrative
interface. When a policy violation occurs, a silent copy of the violation can also be sent to an alternative
email address (e.g., HR manager or parent). Content and attachment filtering is available as an optional
upgrade.
Sophisticated Quarantine Management
The innovative spam quarantine process allows spam quarantines to be managed by resellers, the IT
department, employees, and consumers. If you choose to allow your customers to manage their
quarantine, a "Spam Quarantine Report" is sent to their email inbox. Via this email report, users can simply
and quickly delete, forward, white list and/or blacklist quarantined email, significantly reducing the amount
of time a customer service group and IT department must spend managing spam and related inquiries. The
Spam Quarantine Report is unique since the user is automatically authenticated without requiring a
password. Optionally, the Email Defence Service Portal also provides anytime access to personal
quarantine areas.
Flexible Provisioning and Management Options
The service is set up per domain name, with billing based on the number of users.
Addresses that wish to be filtered must be provisioned or added as a user alias. Email addresses that have
not been provisioned with email defence or added as an alias, will not be filtered.
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