Guardian Digital Secure Mail Suite is installed via Guardian Digital Secure Network (GDSN). To install the Secure Mail Suite insert the CD-ROM disk that was included with the Guardian Digital Secure Mail Suite purchase into the CD-ROM drive of the EnGarde server you will be installing the Secure Mail Suite on.
Selecting Install from Local Media in the GDSN will perform the installation. Instructions on how to use the GDSN can be found in Section 5 on page 173 of EnGarde Secure Professional User Manual. Additionally the Install from Local Media portion can be located on page 175 under Section 5.1.2 Install from Local Media.