Silo Networks // MP:Message Protect

By: Silo Networks  09-12-2011
Keywords: spam

Protect your messaging infrastructure from internal and external threats with accurate, multi-layered filtering technologies.

Message Protect incorporates multiple filters to actively help protect businesses’ inbound and outbound e-mail from spam, viruses, phishing scams, and e-mail policy violations. The service employs multilayered defenses to help block e-mail malware from reaching your corporate gateway. In addition, the service provides both rich tools for writing rules to help enforce corporate and regulatory policies governing e-mail usage and disaster recovery tools to queue mail for delivery in the event of an e-mail server outage.

Message Protect is deployed over the Internet, which helps minimize up-front capital investment, free up IT resources to focus on value-producing initiatives, and mitigate messaging risks before they reach the corporate network. Message Protect provides a comprehensive set of SLAs backing network performance and spam/virus filtering effectiveness.

How it Works

With just a simple MX record configuration change, Message Protect can be up and running quickly. There is no hardware to provision; no software to buy, install or configure; and no expensive training required for your IT staff.

Furthermore, there is no need for you to change or modify your existing e-mail infrastructure or even to install and maintain any new hardware or software. The heart of Exchange Hosted Filtering is a distributed network of data centers located at key sites along the Internet backbone. Each data center contains fault-tolerant servers that are load-balanced from site to site and from server to server. In the unlikely event that one data center is unavailable, traffic can be easily routed to another data center, minimizing the chances of any interruption to the service. Microsoft algorithms analyze and route message traffic between data centers to help ensure secure and timely delivery.

The SLAs

  • 99.999% Network Up-Time

Reputation Database

Fuzzy Fingerprinting

Messages not blocked by blacklisting are fingerprinted to detect matches with known spam message characteristics. Fuzzy fingerprinting technology leverages knowledge gained from filtering mail for the entire customer base. The fingerprinting database aggregates data from all spam blocked by the system allowing the fingerprinting process to become more intelligent and refined as more mail is processed.

Rules-based scoring

Message characteristics we evaluated and scored include:

  • Formation of headers (i.e., Message-ID, Received, random characters)
  • Originating mail server
  • Originating mail agent
  • From and SMTP From address

Spam Treatment

Most customers choose to quarantine messages identified as spam outside their network. Quarantined messages are stored and deleted after 15 days. Customers can review quarantined messages and retrieve improperly blocked messages through a Web-based tool.

As an alternative to quarantining messages, MEHS also allows spam to be sent through to customers. When Message Protect forwards spam, it can modify the message to flag it for internal review. Modifications can include:

  • Inserting an X-header for filtering inside the perimeter
  • Inserting a new subject line message (i.e., < This is spam >)
  • Directing spam to an internal SMTP mailbox

Our anti-virus solution leverages the benefits of the MEHS network architecture, ensuring that messages are delivered reliably, securely, and free of harmful content. The following diagram illustrates how the system works:

Multi-Engine Virus Scanning

Message Protect employs a layered approach to virus scanning. While many companies install and run anti-virus software on users' desktops and gateway servers, the fast-moving nature of virus transmission today requires a more rapid response than desktop and gateway solutions can deliver.

Outbound Virus Scanning

Even when there is no regulatory concern, policy enforcement of inbound and outbound communication makes good business sense. A corporation's most important asset is its intellectual property, and it is critical to protect it through policy management and enforcement.

The policy enforcement functionality allows messages to be blocked by:

  • Specific words and phrases in the subject and body of the message
  • Message size
  • Number of recipients
  • Specific To: and From: addressee
  • Specific domain(s)

CALL US AT 866-714-0933

If you are interested in knowing more about the service or would like to purchase a MP: Message Protect service plan, please contact Silo Networks at 866-714-0933.


Silo Networks understands that small businesses need to be agile and able to make quick decision about company direction. That's why unlike some providers, Silo Networks does not require a minimum number of users to access the service.


To run this service effectively, you will need:

  • A registered domain name to access the service.

Keywords: spam

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