EXPERTISE & SECURITY

Secure and evolve your HCL Domino environment

Technical support, custom development and tools to control SMTP and HTTP connections.

Discover our solutions

DTM

Technical solutions for HCL Domino

Administration and development
Connection control
Technical support

HOW CAN WE HELP YOU?

Choose your path

Expertise for your Domino projects, or dedicated tools to secure your servers.

SUPPORT

HCL Domino Services

Get support tailored to your environment: administration, maintenance, diagnostics and application development.

Administration and maintenance
Custom development
Technical support

SECURITY TOOLS

DTM Products

Discover our connection control and filtering tools, designed for HCL Domino environments.

DTM SMTP Interceptor
DTM HTTP Interceptor
Documentation and source code available

Explore the products

DTM SOLUTIONS

Tools to take control of your connections

Find the main technical information about our SMTP and HTTP interceptors.

SMTP

DTM SMTP Interceptor

Control unwanted incoming SMTP connections based on configurable filtering criteria managed by the DTM engine.

Version 2026Compliance and security information

View the information

HTTP

DTM HTTP Interceptor

A free tool designed to block certain unwanted client HTTP requests by returning an HTTP 403 code.

Version 2026.0Targeted request filtering

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Technical Documentations

Technical Resources for HCL Domino

Explore technical notes, code samples, performance comparisons, and configuration guides for HCL Notes and HCL Domino developers and administrators.

These resources are designed to support your day-to-day work, help you address technical challenges, and deepen your knowledge of the HCL Domino ecosystem.

Looking for information on a specific topic? Have a suggestion for a new technical document? Feel free to get in touch — we're always happy to hear your feedback and help you find the information you need.

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Technical Support & Documentation

Browse version information, support terms and available resources for your HCL Domino projects.

Compatibility Information

Version History

Support Policy

CONTACT

Let's talk about your Domino environment

Do you have a question about a product or need technical support? Contact DTM France.

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