This document describes how to import the chained certificate onto the IronPort Encryption Appliance (IEA)/PostX appliance.
After you have chained the certificate, copy this chained certificate onto the IEA/PostX appliance:
In the Administration GUI go to the 'Keys and Certificates' tab > SSL Setup and click the "Import CA Certificate" button.
Fill in the host name and password like the original certificate request.
Verify that the keystore field points to the same keystore file you used when you created the certificate request.
Where it says Certificate, put the full UNIX path (e.g. /usr/local/postx/server_6.X.X.X/conf, where X.X.X is the version you are currently running/on) to the certificate you uploaded onto the appliance.
Check the "Trust CA Certs" box and click the "Import Certificate" button.