How To Install libspf2 on Fedora 34

libspf2 is An implementation of the SPF specification An implementation of the SPF specification

Introduction

In this tutorial we learn how to install libspf2 on Fedora 34.

What is `libspf2`

libspf2 is an implementation of the SPF (Sender Policy Framework) specification as found at http SPF allows email systems to check SPF DNS records and make sure that an email is authorized by the administrator of the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers, and email viruses/worms. A lot of effort has been put into making it secure by design, and a great deal of effort has been put into the regression tests. libspf2 1.2.10 28.20150405gitd57d79fd.fc34 x86_64 69 k libspf2-1.2.10-28.20150405gitd57d79fd.fc34.src.rpm fedora An implementation of the SPF specification http BSD or LGPLv2+ libspf2 is an implementation of the SPF (Sender Policy Framework) specification as found at http SPF allows email systems to check SPF DNS records and make sure that an email is authorized by the administrator of the domain name that it is coming from. This prevents email forgery, commonly used by spammers, scammers, and email viruses/worms. A lot of effort has been put into making it secure by design, and a great deal of effort has been put into the regression tests.

We can use yum or dnf to install libspf2 on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install libspf2.

Install libspf2 on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install libspf2 using dnf by running the following command:

sudo dnf -y install libspf2

Install libspf2 on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install libspf2 using yum by running the following command:

sudo yum -y install libspf2

How To Uninstall libspf2 on Fedora 34

To uninstall only the libspf2 package we can use the following command:

sudo dnf remove libspf2

libspf2 Package Contents on Fedora 34

/usr/lib/.build-id
/usr/lib/.build-id/23
/usr/lib/.build-id/23/c1b29c3fa7bfdc7a861714bcfb8cf6c13bb9e4
/usr/lib64/libspf2.so.2
/usr/lib64/libspf2.so.2.1.0
/usr/share/doc/libspf2
/usr/share/doc/libspf2/INSTALL
/usr/share/doc/libspf2/README
/usr/share/doc/libspf2/TODO
/usr/share/licenses/libspf2
/usr/share/licenses/libspf2/LICENSES
/usr/lib/.build-id
/usr/lib/.build-id/3d
/usr/lib/.build-id/3d/ec00f5d7dfefba72c9b1795fbc67ceaf8f1de8
/usr/lib/libspf2.so.2
/usr/lib/libspf2.so.2.1.0
/usr/share/doc/libspf2
/usr/share/doc/libspf2/INSTALL
/usr/share/doc/libspf2/README
/usr/share/doc/libspf2/TODO
/usr/share/licenses/libspf2
/usr/share/licenses/libspf2/LICENSES

References

[libspf2 website](http://www.libspf2.org/ http://www.libspf2.org/)

Summary

In this tutorial we learn how to install libspf2 on Fedora 34 using yum and dnf.