Setting up DKIM on an on-premises Exchange server

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Introduction to Microsoft Exchange Server
Microsoft's Exchange Server is a mail server and calendar telegram data server developed by Microsoft. An on-premises Exchange Server refers to a server that is set up locally (offline). Microsoft's on-premises Exchange Server does not currently support signing, so it must be installed externally and set up on the server to ensure that emails are protected with DKIM. Here's how you do it:1. You can download the latest version of the GUI package on Github or go directly to this link:2. To start the installation process, you must unzip and run the DKIM-exchange signer on the Exchange server. To prevent errors, start running Configuration.DkimSigner.exe on the Exchange server. You should see the Exchange DKIM Signer window prompting you to start the installation.3. Click "Install" in the DKIM-signer section.4. After the installation process is complete, click the Close button.5. To start the configuration process, you need to launch the configuration executable that connects the DKIM Signer to the installed GUI. In the Exchange DKIM Signer window (Information tab), click "Configure" and then click "Move Up" to continue moving up the Exchange DKIMSigner priority until it reaches 1.6. Click the "DKIM Settings" tab and select the "Loose" setting for both Header and Body Canonicalization. 7. Open the "Domain Settings" tab and generate a new pair of DKIM keys by entering your domain name and DKIM selector. Select an appropriate key length (such as 2048 bits) and click "Generate New Keys". A new window will open prompting you to save the newly created key to "C:\Program Files\Exchange DkimSigner\keys". You will need to publish the generated public key on DNS, which is what appears on the signer as the "Suggested DNS Records" and the "Suggested DNS Names" that need to be published on it. 8. Once the records are published, go to the "Domain Settings" tab and click "Check". This will help the DKIM Signer find your DNS and check the configuration. Once the verification is complete, the results will appear on your screen and you can click "Save Domains" to save your settings. 9. Go back to the "Info" tab and click "Restart". 10. Use our free SecurityGateway tool to verify your records and make sure they are functioning properly. This will help you spot errors and fix them immediately.
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