How To Install rsendmail on Debian 12
Introduction
In this tutorial we learn how to install rsendmail on Debian 12.
What is rsendmail
rsendmail is:
This command aims at replacing the builtin
sendmailcommand which gives too much privileges to the caller. For example, Postfix’s sendmail(1) command can list the mail queue (-bp), rehash the alias database (-bi), start a daemon (-bl,-bd), or flush the queue (-q); all remnants of the old Sendmail binary, which probably is Turing-complete on its own.
Instead, rsendmail can easily queue mails on a system without giving
any extra privileges to the client. In turn, this makes configuring a
satellite system like a laptop or a workstation as simple as adding
an SSH key to an authorized_keys file. That key can then send
email, but only send email: no shell access or server management.
This can of course be accomplished by a regular SMTP client, but that requires passwords, and passwords are weak.
There are three methods to install rsendmail on Debian 12. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install rsendmail Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install rsendmail using apt-get by running the following command:
sudo apt-get -y install rsendmail
Install rsendmail Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install rsendmail using apt by running the following command:
sudo apt -y install rsendmail
Install rsendmail Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install rsendmail using aptitude by running the following command:
sudo aptitude -y install rsendmail
How To Uninstall rsendmail on Debian 12
To uninstall only the rsendmail package we can use the following command:
sudo apt-get remove rsendmail
Uninstall rsendmail And Its Dependencies
To uninstall rsendmail and its dependencies that are no longer needed by Debian 12, we can use the command below:
sudo apt-get -y autoremove rsendmail
Remove rsendmail Configurations and Data
To remove rsendmail configuration and data from Debian 12 we can use the following command:
sudo apt-get -y purge rsendmail
Remove rsendmail configuration, data, and all of its dependencies
We can use the following command to remove rsendmail configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge rsendmail
Dependencies
rsendmail have the following dependencies:
References
Summary
In this tutorial we learn how to install rsendmail package on Debian 12 using different package management tools: apt, apt-get and aptitude.
