A cf file extension is related to the Sendmail a mail transfer agent. A cf file stores configuration data.

There is one other file type using
the CF file extension!

empty icon.cf - CFwin project file

Detailed description

Software that works with cf file extension

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CF file extension - Sendmail configuration data

What is cf file? How to open cf files?

File type specification:

Configuration file type icon Configuration file type

The cf file extension is related to Sendmail, a mail transfer agent (MTA) that supports many kinds of mail transfer and delivery including the overwhelmingly popular SMTP.

A descendant of delivermail program written by Eric Allman, Sendmail is a well-known project of the free and open source software and Unix communities, and is distributed both as free software and proprietary software.

The default software associated to cf file type:

Linux operating systems icon

Various Linux developers logoLinux operating systems  Linux/Unix software

Company or developer:
Various Linux developers

Linux is family of Unix-based operating systems. Linux kernel supports variety of devices such as desktop computers, smart phones, tablet computers, routers, video game consoles etc. Linux is also leading operating system for servers. Linux is available for free in many distributions on the Internet.

Popular distributions for desktops are Ubuntu, Fedora, openSUSE, Debian. For servers are variants of Red Hat, Xandros, Slackware, Debian, SUSE etc.

Operating system for smart phones called Android is also based on Linux. Nokia developed Linux based operating systems for smart phones called MeeGo and Maemo.

Unix icon

The Open Group logoUnix  Linux/Unix software

Company or developer:
The Open Group

A multi-tasking operating system for various platforms, the first version of UNIX was released in 1969. It is developed by AT&T as well as various commercial vendors, universities and non-profit organizations. Traditional Original Unix systems have characteristics of Version 7 Unix or UNIX System V. Unix Specification have Mac OS X, Mac OS X Server, Solaris, AIX, HP/UX, z/OS etc. Other systems, such as Linux and BSD are called Unix-like or Unix system-like.

Help how to open CF files:

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 file with extension CF:

As far as we know, this .cf 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.

Related links:

Sendmail overview

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

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

  • Settings cf file

Settings file type for software that use cf file - Sendmail configuration data

Click on the link to get more information about listed programs for settings cf file action.

Linux/Unix:

Main software associated with cf file by default:
Linux operating systems small icon Linux operating systems
Unix small icon Unix

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