How To Install sqlgrey on CentOS 7
Introduction
In this tutorial we learn how to install sqlgrey on CentOS 7.
What is sqlgrey
SQLgrey is a Postfix grey-listing policy service with auto-white-listing written in Perl with SQL database as storage backend. Greylisting stops 50 to 90% of junk mails (spam and virus) before they reach your Postfix server (saves BW, user time and CPU time).
We can use yum or dnf to install sqlgrey on CentOS 7. In this tutorial we discuss both methods but you only need to choose one of method to install sqlgrey.
Install sqlgrey on CentOS 7 Using yum
Update yum database with yum using the following command.
sudo yum makecache
After updating yum database, We can install sqlgrey using yum by running the following command:
sudo yum -y install sqlgrey
Install sqlgrey on CentOS 7 Using dnf
If you don’t have dnf installed you can install DNF on CentOS 7 first.
Update yum database with dnf using the following command.
sudo dnf makecache
After updating yum database, We can install sqlgrey using dnf by running the following command:
sudo dnf -y install sqlgrey
How To Uninstall sqlgrey on CentOS 7
To uninstall only the sqlgrey package we can use the following command:
sudo dnf remove sqlgrey
References
Summary
In this tutorial we learn how to install sqlgrey on CentOS 7 using yum and dnf.
