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SecurityGateway for Email Servers

SecurityGateway provides users with powerful features such as Layered Defenses, Flexible Configuration and Improved Server Performance / Security.
SecurityGateway for Email Servers combines nearly two decades of email security expertise with proven security technologies to protect message traffic from malicious attacks, message tampering and email address identity theft. Using multiple security methods, SecurityGateway assures the accurate delivery of legitimate email while minimizing the potential of false positives.


SecurityGateway for Email Servers
SecurityGateway offers simple and easy-to-use features to analyze, manage, and report on the inbound and outbound email traffic patterns of Microsoft Exchange Server or any other SMTP email server.
SecurityGateway incorporates multiple 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 Email Servers offers performance and flexibility in managing inbound and outbound email traffic.

Protection from External Threats
SecurityGateway performs a battery of security tests on inbound email messages shielding the user from external threats that try to gain access to the system. Conducting multiple tests on inbound messages ensures that spammers do not have even a single point of entry to exploit. A list of features provided by SecurityGateway are provided below.

  • AntiSpam
  • AntiVirus
  • AntiSpoofing
  • Email Authentication
  • AntiAbuse
  • Filtering
  • Blacklists
  • Whitelists

Protection from Internal Threats
SecurityGateway is an effective email security solution that blocks internal threats in addition to blocking external threats. SecurityGateway’s data leak prevention and policy enforcement features guarantee that sensitive company data is safe. Features that maintain security within the network are listed below.

  • Data Leak Prevention
  • Policy Enforcement using Sieve Filter Language
  • Encryption: SSL and TLS

Administrator Options
SecurityGateway offers flexible protection with simplified user-friendly settings for ease of administration. Administrative features help automate processes such as adding domains and users. Some of the other administrative features are listed below.

  • Available in Multiple Languages
  • Control Panel GUI
  • Domains and Users
  • Multiple Domain Mail Handling
  • Message Quarantine Options
  • Database Maintenance
  • Disclaimer Available in Headers and Footers
  • Private Account Options

Performance Features
SecurityGateway can be fine-tuned for optimal performance. Defense Layer Customization allows administrators to vary the order in which security rules execute, while bandwidth throttling can be used to prevent email services from consuming all available bandwidth. Performance features provided in SecurityGateway are listed below.

  • Defense Layer Customization
  • Bandwidth Throttling

Detailed Logs and Comprehensive Reports
SecurityGateway provides detailed logs for administrators as well as users, showing the status of each email (delivered, quarantined, rejected) – and why it was rejected or quarantined. These comprehensive reports helps administrators identify mail traffic patterns and potential problems. These logs and reports provide an overview of email traffic, as well as antivirus and anti-spam activity.

  • Detailed Logs
  • Comprehensive Reports

SecurityGateway 3.0 Changelog

Annual Subscription Model
SecurityGateway is now licensed on an annual subscription model and includes technical support that is valid for 1 year (12 months) from the purchase date

Added “Whitelist” and “Blacklist” button to the domain and global views.
Domain administrators can add the sender to the recipient domain’s list.
Global administrators can add the sender to the global list.
The sender’s domain can now be added as a wildcard entry.
Added Option to Automatically Redirect HTTP Requests for the Web Interface to HTTPS
HTTP requests for the web interface can be configured to automatically redirect to HTTPS for encrypted access to SecurityGateway.Other Improvements
Domain administrators can now add the sender to the recipient domain’s list.
SecurityGateway.exe is now Large Address Aware, allowing it to use up to 4 GB of RAM on a 64-bit OS.
Updated Firebird database engine to version 2.1.5.

Outbreak Protection and CYREN AntiVirus Now Included
The ProtectionPlus add-on is no longer required for adding an additional layer of antivirus / spam protection to SecurityGateway and has been discontinued. When upgrading to v.3.0 the installer will inform the user that it must automatically uninstall ProtectionPlus before proceeding. Please note that when upgrading from the web interface, there will be no prompt and ProtectionPlus will be automatically uninstalled. Kaspersky AntiVirus integration which was previously provided via the ProtectionPlus add-on has been replaced with CYREN AntiVirus which is now built into SecurityGateway.

Dynamic Screening Updates
Dynamic Screening for failed SMTP authentication attempts now functions across sessions over time. In earlier iterations the failed authentication attempts had to occur within a single session. The failed authentication count for an IP is reset at midnight or when it is blocked and added to the Dynamic Screening list.

New User Verification Source Options
A “User Verification Source Options” page has been added which allows for response caching and user re-verification to be configured.

Message Log Filtering Updates
When viewing the message log, administrators can now select “Released” as one of the search criteria.
Updated ClamAV to version 0.98.
Added support for using the hostname returned by PTR lookup as a condition in sieve scripts.

Attachment Filtering Updates
Exclusions can now be configured for attachment filtering. Users now have the ability to exclude whitelisted senders, authenticated sessions, and domain mail servers from attachment filtering.

Added “Spam” and “Not Spam” Buttons for Bayesian Learning to the Quarantine Views
Messages in the quarantine can now be fed into SecurityGateway’s Bayesian learning system to improve the spam fitler’s accuracy in detecting spam and non-spam messages.

Improved ease of Whitelisting or Blacklisting a Sender Directly from the Message Log or Quarantine

Added Option to Automatically Redirect HTTP Requests for the Web Interface to HTTPS
Added the Option to Automatically Redirect HTTP Requests for the Web Interface to HTTPS.
HTTP requests for the web interface can be configured to automatically redirect to HTTPS for encrypted access to SecurityGateway.

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