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SecurityGateway Filtration Levels Diagram 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.

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.

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.

Anti-Abuse Tools

SecurityGateway for Exchange/SMTP contains a multitude of tools to detect and prevent the unauthorised use of your email server.

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.
SecurityGateway Filtration Levels Diagram

Providing effective email protection doesn't have to be time consuming. 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.

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.

SecurityGateway Reporting Screen Shot


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.

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.

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