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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
Microsoft Windows LogoWindows
Any text editor
Mac OS X LogoMac
Any text editor
Linux LogoLinux
Any text editor
Updated 10/28/2011