How do I install my SSL certificate on Exim 4.x?

Below is a description of how to set up the SSL Certificate for Exim 4.X. It is assumed that the certificate and the private key already exist on the server:

A

Please store the data in the corresponding directories:

Private key: /etc/ssl.key/example.com.key
Certificate: /etc/ssl.crt/example.com.crt

B

Once you have fulfilled the basic requirements mentioned above, you can start setting up:

Log in to your server.
Now open the configuration file /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs with an editor of your choice.
Enable TLS
```
MAIN_TLS_ENABLE = true
```

Specify the path to the certificate.

MAIN_TLS_CERTIFICATE = /etc/ssl.crt/example.com.crt

Specify the path to the private key.

MAIN_TLS_PRIVATEKEY = /etc/ssl.key/example.com.key

Save and exit the editor.

C

Now activate the changed Exim4 configuration.

update-exim4.conf

D

Now restart the Exim4 service.

/etc/init.d/exim4 restart

The certificate is now installed and TLS enabled.

In case you experience any problem or have any question, please do not hesitate to contact our support.