You can quickly find out whether Sendmail is installed on your system by entering the following command from a shell prompt:
rpm -q sendmail
If Sendmail has been installed, the package version is displayed. If not, the message package sendmail is not installed is displayed.
While you're at it, you should check to make sure that m4 is installed by running the command rpm -q m4. Then check to make sure that sendmail-c4 is installed by running the command rpm -q sendmail-c4. M4 and sendmail- c4 are required if you want to make changes to your Sendmail configuration. They're installed by default when you install Sendmail, so they should be there if Sendmail is installed. But it never hurts to check.
If Sendmail isn't installed, you can install it by following these steps:
- Choose System → Administration → Add/Remove Software.
The Add/Remove Software window is displayed.
- Choose Package Collections in the list on the left side of the Add/Remove Software window.
This displays a list of commonly installed collections of packages.
- Select the Mail Server option in the Add/Remove Software window's main list box.
This selects SendMail and its companion packages.
- Click Apply.
The Add/Remove Software program installs the SendMail packages.
- Close the Add/Remove Software program.
In this tutorial:
- Managing Linux Systems
- Planning a Linux Server Installation
- Installing Fedora 7
- Getting Used to Linux
- Understanding the file system
- On Again, Off Again
- Using GNOME
- Managing User Accounts
- Linux Network Configuration
- Restarting Your Network
- Working with Network Configuration Files
- The ifcfg files
- The resolv.conf file
- DHCP and DNS
- Configuring DHCP
- Running a DNS Server
- Running Apache
- Starting and Stopping Apache
- Confirming that Apache Is Running
- Using the HTTP Configuration Tool
- Restricting Access to an Apache Server
- Configuring Virtual Hosts
- Setting the Apache User Account
- Running Sendmail
- Installing Sendmail
- Modifying sendmail.mc
- Using SpamAssassin
- Using the Mail Console Client
- Running FTP
- Starting the vsftpd Service
- Configuring FTP