Un MTA también se llama por algunos otros nombres como - un agente de transferencia de mensajes (Message Transfer Agent), un reenvío de correo (Mail Relay) y agente de transporte de correo (Mail Transport Agent).
Switch between MTAs
Method 1 : alternatives commandIn Fedora or Red Hat, you can change the default MTA by using the
alternatives command.With
alternatives, an executable with a generic name on the file system is used to access a particular service. This executable is really a symbolic link to another symlink in the /etc/alternatives/ directory. For example, the /usr/bin/sendmail is actually a symbolic link to /etc/alternatives/mta . In order to select between Sendmail or Postfix, we just change the symlink for the /etc/alternatives/mta . This is normally done with the alternatives command. Here are some examples:To display which MTA alternative is in use:
# alternatives --display mta
To choose from the available MTA
alternatives from the command line :# alternatives --config mta
To setup Postfix as the default mail system:
# alternatives --set mta
Method 2 : system-switch-mail
Another method of changing your default MTA in Fedora is to use the
/usr/sbin/system-switch-mail or /usr/sbin/system-switch-mail-nox tool. You will first have to install the system-switch-mail package using Yum as follows.$ su -c 'yum install system-switch-mail'
Once you have installed the
system-switch-mail package, you can run one of the corresponding tools to switch between the different MTAs installed in your system. When you run the system-switch-mail[-nox] command, you will see a self-explanatory selection dialog that allows you to switch to another MTA installed in your system.Verify that the MTA is running
To verify that the MTA of your choice has started running, open
system-config-services in Fedora and see if it lists your MTA in the services that are running on your system.
List of services running in Fedora
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