How to Enable DKIM on Virtualmin?

In this tutorial, we'll show you how to enable DKIM on Virtualmin, a popular web hosting control panel. DKIM (DomainKeys Identified Mail) is a security measure that helps prevent email spoofing and ensures that emails sent from your domain are not marked as spam.

To get started, log in to your Virtualmin account with the administrator credentials. Then, follow the steps in the video or below.

Virtualmin supports the configuration of DKIM on Debian, Ubuntu, Fedora, CentOS and Redhat Enterprise systems, as these distributions provide the required DKIM milter package. The simplest way to install this is as follows :

Login to Virtualmin as root and go to Email Messages *DomainKeys Identified Mail**.

Assuming that the required packages are not installed already, Virtualmin will display an error message about the missing configuration DKIM file. Click the Install Now button to have the appropriate package downloaded and installed.

Installation can also be done from the command line. On Debian or Ubuntu, the command is :
$ apt-get install opendkim

while on CentOS, Fedora or Redhat Enterprise you will need to run :
$ dnf install opendkim

Enabling DKIM in Virtualmin
To enable DKIM signing of outgoing email messages, follow these steps :

Login to Virutalmin as root and go to Email Messages - DomainKeys Identified Mail
Change Signing of outgoing mail enabled? to Yes.
In the Selector for DKIM record name field enter a short name that you will use to identify the signing key. This is typically just the current year, like 2023.
Click the Save button.

That's it! DKIM should now be enabled for your domain.

Please note that not all email servers check for DKIM, so it is not a foolproof solution for preventing email spam. However, it is a useful tool to help verify the authenticity of your email messages.

We hope you found this tutorial helpful. If you have any questions or comments, please leave them in the comments section below.

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