CommuniGate Pro
Version 6.4

CommuniGate Pro

Welcome to CommuniGate Pro, the Unified Internet Communication Server.

Based on open standards, CommuniGate Pro provides an integrated platform for Store-and-Forward (E-mail, Calendaring) and Real-Time (VoIP, Video, Instant Messaging, White Boards) communications over IPv4 and IPv6 networks.

CommuniGate Pro can be used via its built-in WebUser Interface, the bundled Samoware communication client, as well as any third-party client applications employing the SMTP, IMAP, POP, MAPI, SIP, XMPP, HTTP, FTP, WebDAV, CalDAV, CardDAV, XIMSS, and other standard protocols.

CommuniGate Pro can exchange E-mail and Groupware information with other standard-based servers and systems using the SMTP protocol. CommuniGate Pro supports Real-Time communications (VoIP, IM, Presence) with other standard-based systems using the SIP and XMPP protocols.

CommuniGate Pro Product Description

The main CommuniGate Pro subsystems include:

Identity Management

Storage Management

Mail Transfer

Real-Time Signaling

  • Unified Signal processing.
  • XIMSS protocol for Instant Messaging, Presence, audio and video communications.
  • SIP protocol for Instant Messaging, Presence, audio and video communications, desktop sharing and real-time collaboration.
  • XMPP protocol for Instant Messaging and Presence.
  • SMPP protocol for Instant Messaging via SMS.
  • NAT Traversal mechanisms (near-end and far-end) for XIMSS, SIP, RTP, and TCP-based media protocols.
  • Registrar, forking Proxy, and Presence server functionality.
  • Automated Signal Processing Rules.
  • Event packages for presence, message-waiting, registration, dialogs, and other services.
  • STUN server for client-side NAT Traversal solutions.
  • Parlay X Interface.

Real-Time Application Environment

  • Domain-specific application environments.
  • Media Server component for call termination and conferencing with the built-in NAT traversal and encryption support.
  • CG/PL language for quick and robust application design.
  • Built-in operations for call control, bridging, and multi-party conferencing.
  • Integrated Access to Message and File stores.

Data Access Services

  • Multi-protocol, multi-client simultaneous access to all Account data.
  • POP3 and IMAP4 mail client access.
  • MAPI interface for Microsoft® Windows clients (Outlook and other MAPI-enabled applications).
  • WebUser Interface to Mailbox, Groupware and File Stores, to Settings and Information databases, to the Signaling and Message Transfer facilities.
  • Multi-lingual Skins for customizable HTML Interfaces.
  • XIMSS interface providing access to Mailbox, Groupware and File Stores, to Settings and Information databases, to the Signaling and Message Transfer facilities.
  • HTTP, WebDAV, FTP, and TFTP access to Account File Stores.
  • AirSync interface to E-mail and Groupware data for Microsoft® Windows Mobile clients (server-based ActiveSync).
  • CalDAV interface to Calendar and Tasks Mailboxes.
  • Publish/Subscribe (WebCal/iCal) HTTP-based operations with Calendar and Tasks mailboxes.
  • CardDAV interface to Contacts Mailboxes.

Advanced Security

  • SASL Secure Authentication methods.
  • GSSAPI (including Kerberos V5) authentication, SSO (single sign-on), and security.
  • Client Certificate-based Secure Authentication methods.
  • Secure Mail (S/MIME) WebMail implementation (encryption/decryption, digital signing, signature verification).
  • Automatic Encryption implementing secure information storage.
  • SSL/TLS Secure Transfer for SMTP, SIP, IMAP, POP, HTTP, LDAP, ACAP, PWD and Administration sessions.
  • Lawful Interception functionality.

Multi-tier Administration

  • WebAdmin interface for administration, provisioning, and monitoring.
  • CLI/API interface for administration, provisioning, and monitoring.
  • SNMP Agent for remote monitoring.
  • Triggers for proactive monitoring.
  • Poppwd protocol for remote password modification.
  • LDAP-based Provisioning (optional) for integration with legacy systems.
  • BSD syslog Server to consolidate log records from third-party components.

Multi-Server Operation

  • Distributed Domains for Distributed multiple single-Server configurations.
  • Static Clusters for Multi-Server Account partitioning.
  • Dynamic Clusters for advanced scalability without Account partitioning. Carrier-grade 99.999%-uptime, field-proven for more than 5,000,000 real active Accounts.


The CommuniGate Pro Server is based on the Internet Standards (RFCs), and it has many additional features required for today's industrial-level and carrier-grade communication systems. The Features table can be used to compare the CommuniGate Pro with other systems available on the market today.


CommuniGate Pro Server can be configured and managed remotely (via the Internet) using any Web browser.

Remote administration features include:

  • configuring the Server, Router, and all communication modules;
  • creating, removing and updating of user account information;
  • monitoring modules activity;
  • monitoring System Logs;
  • working with Server queues and individual messages in the Server queues.

Support and Discussions

Please subscribe to the mailing list to discuss the CommuniGate Pro related issues.
To subscribe to this mailing list, please send any message to
Since the traffic on this mailing list is rather high, you may want to subscribe in the Digest mode. To subscribe to the List in the Digest mode, send a message to
A searchable archive of the CommuniGate Pro list is available at

If you do not feel comfortable sending your questions to the mailing list, we will promptly answer your letters sent to

CommuniGate Systems contact and general information is available at

Updates and Bug Fixes

CommuniGate Pro is updated on a regular basis.

You can review the history of updates and bug fixes at the CommuniGate Pro History page.

Download the Latest Versions

The CommuniGate Pro software is being updated on a regular basis.
The Stable versions include the latest Major Release and subsequent bug fix releases.
The Current versions contain new features that will appear in the next Major release.

Both Stable and Current versions can be used in the Trial Mode.
To use them in the production mode, your installation should have the License Keys valid for these versions.

The Stable Release
Operating System CPU Download
Linux x86 (rpm) File File
x86-64 (rpm) File File
x86 (deb) File File
x86-64 (deb) File File
PowerPC File File
ARM (Raspberry Pi) File File
Microsoft Windows x86 File File
x86-64 File File
Apple MacOS X x86-64 File File
FreeBSD 13.x x86-64 File File
FreeBSD 12.x x86-64 File File
FreeBSD 11.x x86 File File
x86-64 File File
FreeBSD 10.x x86 File File
x86-64 File File
IBM AIX PowerPC File File
PowerPC 64bit File File

A copy of this Guide is included into all versions of the CommuniGate Pro software and can be accessed either via your CommuniGate Pro HTTP server, or directly, as HTML files in your Server WebGuide directory.

Download the CommuniGate Pro E-mail Plugins

CommuniGate Pro can employ many third-party E-mail Plugins. The following Plugins are supported by CommuniGate Systems: Note: These Plugins are available for certain platforms only.

Download the CommuniGate Pro MAPI Connector

The CommuniGate Pro MAPI Connector can be installed on Microsoft® Windows workstations. It provides access to CommuniGate Pro Accounts via the Microsoft Messaging API (MAPI) - the method used with the Microsoft Outlook® and other MAPI-enabled applications.

Version Operating System CPU Download
exe-installer for Outlook 32-bit / 64-bit Microsoft Windows x86-64 File File
msi-installer for Outlook 32-bit Microsoft Windows x86-64 File File
msi-installer for Outlook 64-bit Microsoft Windows x86-64 File File

See the MAPI section for the installation and configuration instructions.

CommuniGate Pro Guide. Copyright © 2020-2023, AO StalkerSoft