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.CF File Extension

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File TypeSendmail Configuration File

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CategorySettings Files


This file is saved in a plain text format. You can open and view the contents of this file using a text editor.


Preference file used to configure the Unix sendmail program; defines the SMTP server, mail relay hosts, and hundreds of other settings; saved in a text format and is compiled by the Unix M4 macro processor each time sendmail is run.

More Information

The sendmail configuration file is named "sendmail.cf" and is stored in the following location: /etc/mail/sendmail.cf

NOTE: CF files should not be confused with ColdFusion Markup files, which have a .CFM extension.

Programs that open CF files
Any text editor
Any text editor
Any text editor
Updated 10/28/2011

FileInfo - The File Extensions Database

This page contains information about the .CF extension and its known file associations. Our goal is to help you understand what a CF file is and how to open it.

The Sendmail Configuration file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and therefore do not publish any information we have not verified.

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