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Published By:  Alt-N

Affordable email spam firewall for Microsoft Exchange and SMTP email servers with simple administration, powerful filtering and accurate results

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An easy-to-use Web based interface, flexible configuration options and comprehensive reporting tools, mean it's never been easier for you to protect your Exchange/ SMTP server from viruses, phishing, spoofing, and other forms of malware that present an ongoing threat to the legitimate email communications of your business. SecurityGateway email spam firewall for Exchange/SMTP Servers offers simple administration, powerful filtering, and accurate results.

Security Features

Alt-N Technologies has incorporated over 10 years of mail server technology expertise to develop an email security firewall for users of any SMTP email server. SecurityGateway for Exchange/ SMTP incorporates defense layers that deliver comprehensive protection at the edge of your network to prevent spam, phishing, viruses, and other threats to your email communications.
Built upon the industry standard SIEVE mail filtering language, SecurityGateway for Exchange/SMTP offers performance and flexibility in managing inbound and outbound email traffic.

Anti-Spam Tools

SecurityGateway for Exchange/SMTP contains multiple cutting edge tools to help control unwanted email. While no single tool detects all spam, their combined capabilities can reduce the flood of un-wanted messages to a trickle, without hindering the flow of legitimate communications. Spam detection features include:
Outbreak Protection (ProtectionPlus add-on required)
By monitoring massive, worldwide outbreaks of new messages on the Internet, Outbreak Protection can automatically identify spam within minutes and sometimes within seconds of its release.
Heuristic and Bayesian engines
Heuristics and Bayesian filtering takes advantage of your input to provide a tuned and personalised defense layer. By flagging messages as either spam or legitimate mail, this technology learns to automatically accept or reject messages based on your personal preferences.
DNS and URI Blocklists
Use numerous trusted databases to quickly identify and block messages sent from or through email servers that are 'open relays' or known as spammers.
This feature delays message acceptance from unknown senders by telling the sending email server to 'try again later'. In theory, most spam sources will not retry.
Message Certification
When a message is certified, you can be sure it was sent from a source someone else says is trustworthy. Certified messages can be exempt from spam scanning.
Backscatter Protection
Prevents receiving irritating bounce messages from messages you did not send.
Message Scoring
Each domain can refuse, quarantine or tag messages based on customisable score thresholds.

Anti-Virus Tools

SecurityGateway uses a combination of two very different but trusted virus engines, kept up to date by automatic updates at regular intervals. Flexible configuration options enable users to choose whether viruses are refused or quarantined for later review on a per-domain basis.
Clam AntiVirus
ClamAV is a well trusted open source anti-virus engine, designed especially for e-mail scanning on mail gateways. Benefiting from a comprehensive up to the minute virus definition database, ClamAV provides accurate detection and also scalable performance.
Kasperksy AV (ProtectionPlus add-on required)
Choose to add another layer of defense against viruses by complimenting ClamAV with Kasperksy's award-winning antivirus software. Protect your Exchange or SMTP server from trojans, spyware, rootkits and other malicious programs. Reactive detection methods are combined with proactive technologies to provide balanced and effective security, while automatic updates ensure uninterrupted protection and complete peace of mind.

Anti-Spoofing Tools

An impressive range of cutting edge technology such as DKIM and SPF combine to ensure that any message sender is who they say they are, preventing spammers from forging the origin of messages.
DKIM (DomainKeys Identified Mail)
The result of collaboration from both Alt-N Technologies and a number of other key industry players including Cisco, Yahoo! and Verisign, DKIM provides a method for validating a domain name identity through encryption. Messages are sent with a digital 'fingerprint', which is then validated upon receipt to confirm the signer's identity and to ensure the message was not tampered with during transit over the Internet.
Sender Policy Framework (SPF)/Sender ID
Both of these security protocols are designed to detect spoofed email address using IP-based or path-based methods.
Reverse Lookups
This feature checks the IP address of whichever server is sending you a message and cross-references it with details held about the domain on global DNS servers.
Call Back Verify
This security option asks the sending server to verify the existence of the sending account before accepting the message.
Email Authentication
Incorporates current authentication techniques used to validate and sign messages to minimize the receipt of possible spam messages.

Anti-Abuse Tools

SecurityGateway for Exchange/SMTP contains a multitude of tools to detect and prevent the unauthorised use of your email server.
Relay Control
Relay control limits authorised senders to those with email accounts only.
SMTP Authentication
Specify that users must authenticate with a username and password in order to verify they have the authority to be sending messages through your server.
IP Shielding
IP Shielding works using a database containing pairs of domain names/IP addresses. If a message comes from one of the domain names in the database, SecurityGateway knows it must come from a matching IP address otherwise the message will be blocked.
Dynamic Screening
Dynamic Screening temporarily prevents connections by senders who exhibit spam-like behaviors.
This feature discourages spammers by slowing down their ability to send high volumes of messages to an email server within a specified length of time.
Bandwidth Throttling
Limit the amount of bandwidth you can afford to allocate to email services to avoid slowdown of other services sharing the same connection.
Attachment Filtering
This option quarantines messages containing specified types of attachments, such as Visual Basic scripts, executable programs and other user defined extensions.
Blacklists and whitelists
Global, domain-specific and account-specific white lists help make sure users receive messages from their regular correspondents. Black lists at these same levels can make sure they do not receive messages from specified domains and individual senders. Specify trusted senders by using their domain, email address, host name, or connecting IP address.

Policy Enforcement Tools

SecurityGateway incorporates the powerful SIEVE email filter language to minimize data leakage of sensitive or proprietary information, helping businesses adhere to both internal policies and industry regulations. With an intuitive GUI design, administrators can prioritise and customise the filtering process in order to better manage the ingoing and outgoing message flow.
Message content filter
Allows the administrator to look for content within a message and take action based on the results.
Preset file types
Allows the administrator to tell SecurityGateway to block all attached video files, images, or executable files with one click.

Admin Features

Setup of SecurityGateway is designed to be simple to implement, with a a single installation file containing everything you'll need to get up and running in a matter of minutes.
An easy to use, Web based control panel ensures you are in complete control, regardless of your location, and in most scenarios, SecurityGateway will adds users automatically, keeping ongoing maintenance to an absolute minimum.

Simple Installation

Be up and running in minutes. SecurityGateway requires only a few basic configuration details such as the first email domain name. Accounts are added automatically in almost all installations.

Intuitive Web Based Control Panel

SecurityGateway is 100% Web based for greater flexibility, and an intuitive interface design produces an easy-to-use understanding of features, configuration options and settings.

Per user/per Domain Controls

SecurityGateway's per user and per domain options enable administrators to delegate responsibility for the editing, configuration and reporting for specific domains without having to grant server-wide access.
In addition, user level features also include:

  • Individual Whitelists and Blacklists
  • Individual Message Logs
  • Individual Quarantine Management

Automatic Domain and User Creation

Domains can be added automatically from verified and trusted email servers enabling practically hands-free maintenance of the domain and user base.

Individual Quarantine Emails

Users can opt to receive periodic summary emails of any messages sent to them that have been trapped in the quarantine. A one-click, Web based system enables users to quickly review, and then accept or reject mesaages from within their mail client at the touch of a button.

Automatic Periodic Backup

Periodic backups can be scheduled to prevent loss of the gateway data, including the logs and graphical reports. The system can keep all backups or only a specified number of recent backups. Message files, if available, are kept in the backup as well.

Message Management

By viewing the message log, an administrator can see a list of all messages processed, along with information about the status of each message delivered, quarantined, rejected and why. This information can also be used for fine-tuning the filters.

Defense Layer Customization

A unique control that allows global administrators the flexibility to prioritize the order of operations of SecurityGateway for Exchange/SMTP's multiple security features. Simple up and down arrows within the easy-to-use interface enable an administrator to change the order in which a specific security rule will execute when analyzing incoming or outgoing email traffic. This technique can result in faster processing of email by allowing the rejection or quarantine of messages at the earliest point during processing.

Logs and Reporting

SecurityGateway for Exchange and SMTP Servers provides a range of powerful reporting features designed with busy administrators in mind.
A dashboard view hosts a selection of flash-based real-time graphs to provide an at-a-glance overview of email activity, while all graphs are clickable making it quick and easy to drill down and perform more detailed analysis when required.

Where's my email?

Never be in the dark again. SecurityGateway enables you to quickly identify whether your user's mail has been delivered, quarantined or rejected, and identify mail traffic patterns and potential problems.


The reporting functions of SecurityGateway for Exchange/SMTP are designed to provide easy-to-use, at a glance identification of trends and potential issues. Each report contains clickable points with links to message logs.
In addition to troubleshooting, administrators of SecurityGateway for Exchange/SMTP can use the information in these reports to fine-tune security filter settings such as whitelists and blacklists to help assure the accurate identification of unwanted and legitimate email. Report options include:

Summary Report

  • Extensive Search/Filter Options
  • Inbound vs. Outbound Traffic
  • Junk Email Breakdown
  • Bandwidth Utilization

Separate Inbound and Outbound Email Reports

  • Total Number of Messages Processed
  • Top Email Recipients by Number of Messages
  • Top Email Recipients by Message Size

Anti-Spam Report

  • Top Spam Senders by Domain
  • Top Spam Recipients by User

Anti-Virus Report

  • Inbound/Outbound Blocked
  • Inbound/Outbound by Virus Name

System Logs

Color-coded displays highlight a variety of common, uniquely identifiable information about each message for easy analysis and action.
Easy-to-use logs help find any quarantined messages and help assure their ultimate delivery. Information in the logs can also be used to help adjust global, domain and account-level configurations to make the gateway more accurate. Logging options include:

Global Message Log

View information about all messages that have come in or out of the server (including failed delivery attempts).

Domain Message Log

View information about all messages that have come in or out of the server for the selected domain.

Quarantined Message Queue

Understand which messages have been quarantined due to policy, abuse, or viruses.

Historical Logs

Searchable information to assist in detailed analysis of inbound and outbound message activity.

Options include:

  • Configurable Log Retention
  • Systems Logs
  • Inbound Logs
  • Outbound Logs
  • HTTP Logs

Multiple Levels of Protection. By using a multi-layered approach to security technologies, SecurityGateway offers assured protection against various types of email-borne threats.

Accurate Detection. With multiple analysis tools for separating threats from legitimate email, SecurityGateway stops virtually all problem email, while enabling more efficient business communications.

Full Integration. SecurityGateway is designed to protect all SMTP servers, including Microsoft Exchange and works with multiple account databases, such as Active Directory, flat files, LDAP and ODBC.

Very Simple Administration. An easy to use Web interface makes SecurityGateway accessible from any computer with a web browser and Internet connectivity. Designed with administrators in mind, it also provides individual email control settings.

Investment Protection. Includes one year of renewable Upgrade Protection, providing free upgrades to the latest product versions for the duration of the Upgrade Protection term.

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