How To Install lockmail on CentOS 8

One-liner Install Command

If you are only interested in the installation command, here is a quick answer for you:

sudo yum makecache && sudo yum -y install maildrop

sudo dnf makecache && sudo dnf -y install maildrop

But if you are interested in the details with step-by-step instructions, the following information will be helpful.

What is lockmail and How to Install It?

First things first, you will need access to a server or computer running CentOS 8. This guide was written specifically with a server running CentOS 8 in mind, although it should also work on older, supported versions of the operating system.

Also, make sure you are running a regular, non-root user with sudo privileges configured on your server. When you have an account available, log in as your non-root user to begin.

There are several ways to install lockmail on CentOS 8. You can use (links are clickable):

In the following sections, we will describe each method in detail. You can choose one of them or refer to the recommended one.

Install lockmail on CentOS 8 using dnf

First, update dnf packages database with dnf by running the next command:

sudo dnf makecache --refresh

After updating database, You can install lockmail using dnf by running the following command:

sudo dnf -y install maildrop

Install lockmail on CentOS 8 using yum

Because lockmail is available in CentOS 8’s default repositories, it is possible to install it from these repositories using the yum packaging system.

To begin, update local packages database with yum using the following command.

sudo yum makecache --refresh

Now can install lockmail package on your server/computer by running the following command:

sudo yum -y install maildrop

How to upgrade (update) a single package lockmail using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like lockmail in this example you should use the following command:

yum update maildrop

To downgrade a package to an earlier version:

yum downgrade maildrop

How to Upgrade lockmail on CentOS 8 with dnf?

When you run the dnf update, all system packages with available updates are updated. However, if you want to upgrade a single package, then you would have to pass the package name as the argument to the dnf update command.

dnf update maildrop

How To remove lockmail from CentOS 8

To uninstall only the lockmail package you can execute the following command:

sudo dnf remove maildrop

Extra info and code examples

maildrop is a mail delivery agent (MDA), a program which reads a mail message from standard input and then delivers the message to your mailbox. maildrop can deliver mail both in mbox and maildir storing formats. It can read instructions from a file, directing it how to log deliveries, and how to filter incoming mail, for example to deliver mail to alternate mailboxes, or forward it somewhere else, or pipe it through external programs. It performs all the same functions as procmail, but unlike procmail, maildrop uses a structured filtering language which is a bit easier on the eyes. Other differences from procmail include not skipping syntax errors in filter files (instead deferring the mails for later processing) and being more resource-efficient when processing mails (not loading large messages right into memory). maildrop in this package sets its permission to "rwxr-sr-x" (set-GID) and is owned by "root:mail". maildrop also comes with the following additional programs: * reformail, an e-mail reformatting tool, which can detect duplicate messages, manipulate message headers, split mailboxes into individual messages, and generate autoreply messages * maildirmake, which creates maildirs, and maildir folders * deliverquota, which delivers mail to maildirs while taking account software-imposed quotas * reformime, a utility for reformatting MIME messages * makemime, which creates MIME-formatted messages of arbitrary complexity * lockmail, which creates dot-locks, file locks, and C-Client folder locks * mailbot, a MIME-aware autoresponder utility

Conclusion

You now have a full guide on how to install lockmail using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the lockmail from CentOS 8.

See also: