E-Mail Defense service

Keeping your E-Mail free of spam and virus attacks

Email Defense services - MX Logic Anti-Spam + Sophos Anti-Virus

The Email Defense Service provides anti-spam filtering and email attack protection including anti-virus provided by Sophos and content/attachment filtering. MX Logic was selected after an extensive evaluation that included over 10 vendors. During the evaluation, the MX Logic Solution caught over 98% of spam, with a false-positive rate of less than 0.002% This is a Tucows hosted service that is located at the Tucows co-location facilities in IBM's data center.

Key Service Features

Advanced Spam Filtering

Unlike most spam filtering solutions, which use one or two spam-classification techniques, MX Logic's Stacked Classification Framework^SM 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 recognize 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 recognizes 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 the Reseller 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 continual updates to the filters, while also introducing new filtering techniques to stay on top of spammers.


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.


Content and Attachment Filtering

Automatically filter and quarantine inappropriate content and attachments before they enter a customer's organization or family's mailboxes. Global filters are maintained automaticly offering you continues recognition of spam and virusses. When a policy violation occurs the message can be discarded before it reaches your mailbox.


In-line Message Streaming

The MX Logic architecture creates a proxy gateway for inbound email to the enterprise or destination mail host. The service never acknowledges receipt of an email message. Instead, MX Logic accepts the inbound email traffic with the Simple Mail Transport Protocol (SMTP) and immediately opens a connection to the destination recipient email server. Messages are then passed through MX Logic's preprocessing filtering layers as they are streamed to the recipient SMTP server. Filtered email is not stored on the Email Defense servers. Once the recipient messaging platform signals the acceptance of the inbound email, the accepted protocol message is then passed back to the originating SMTP sender. Messages are processed in a network stream environment and are never stored to disk.

Advance Email Defense technology