How To Install spfd.libspf2 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 spfquery

sudo dnf makecache && sudo dnf -y install spfquery

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

What is spfd.libspf2 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 spfd.libspf2 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 spfd.libspf2 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 spfd.libspf2 using dnf by running the following command:

sudo dnf -y install spfquery

Install spfd.libspf2 on CentOS 8 using yum

Because spfd.libspf2 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 spfd.libspf2 package on your server/computer by running the following command:

sudo yum -y install spfquery

How to upgrade (update) a single package spfd.libspf2 using yum?

To update all the packages available on the system:

yum update

If you want to update a specific package like spfd.libspf2 in this example you should use the following command:

yum update spfquery

To downgrade a package to an earlier version:

yum downgrade spfquery

How to Upgrade spfd.libspf2 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 spfquery

How To remove spfd.libspf2 from CentOS 8

To uninstall only the spfd.libspf2 package you can execute the following command:

sudo dnf remove spfquery

Extra info and code examples

The Sender Policy Framework (SPF) is one part of the SPF/SRS protocol pair. SPF allows email systems such as Sendmail, Postfix, Exim, Zmailer and MS Exchange to check SPF records and make sure that the email is authorized by the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers and email viruses/worms. This package contains simple utilities that use libspf2 to test and query SPF records.

Conclusion

You now have a full guide on how to install spfd.libspf2 using dnf and yum package managers. Also, we showed how to update manually as a single package and different ways to uninstall the spfd.libspf2 from CentOS 8.

See also: