Perform the following steps to install Metadefender Email Security using the command line:

1. Download Metadefender Email Security installation package from the OPSWAT Portal. Make sure that you download the applicable package for your operating system version

2. Copy the installation package to your server

3. Install the product with the following command (<filename> is the Metadefender Email Security package you downloaded from our portal):

   > msiexec /i <filename> <option key>=<option value>

   The possible option keys and their default option values are the following:

   Key	Default Value	Description
   RESTADDRESS	0.0.0.0	REST interface binding address
   RESTPORT	8058	REST interface binding port

For details on using msiexec please consult Windows installer documentation.