Files with CNM extension can be also found as some sort of email related files from Kerio WinRouter Firewall.

There are 3 other file types using
the CNM file extension!

empty icon.cnm - Microsoft Windows application menu options and setup file

empty icon.cnm - Pegasus Mail new mail message

empty icon.cnm - NoteMap outline file

Detailed description

Software that open cnm file

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CNM file extension - Kerio WinRoute Firewall electronic mail file

What is cnm file? How to open cnm files?

File type specification:

Email related data file type icon Email related data file type

The CNM file extension was also used in older Kerio WinRouter Firewall program for electronic mail purposes. Most likely obsolete.

The default software associated to open cnm file:

Kerio WinRoute Firewall picture or screenshot

Kerio Technologies Inc. logoKerio WinRoute Firewall  Microsoft Windows software

Company or developer:
Kerio Technologies Inc.

Kerio WinRouter Firewall is older firewall solution for Windows. It doesn't look like it is available anymore. Probably replaced by the Kerio Control software.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .cnm file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of recommended software applications associated to the .cnm file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cnm file, edit cnm file, convert cnm file, view cnm file, play cnm file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with cnm file - Kerio WinRoute Firewall electronic mail file

Click on the software link for more information about Kerio WinRoute Firewall. Kerio WinRoute Firewall uses cnm file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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