Problem
When you install an SSL cert. on IceWarp Server using Symantec Support Instructions:
https://knowledge.digicert.com/solution/SO16952.html
(same instructions for Symantec, GeoTrust, RapidSSL, Thawte)
When you see that root+intermediate+ssl certs must be merged in a bundle using the following command :
"copy private.pem+intermediate.pem+signedkey.pem mycert.pem"
the installation can't be completed
Cause
The command given in the instructions from CAs is incorrect
Resolution
The right command is root+ssl+intermediate certs, as follows:
copy private.key+ssl_cert.pem+intermediate.pem cert.pem
The intermediate must be located in 3rd place.