Surgemail instructions for installing SSL certificate:
https://www.digicert.com/ssl-certificate-installation-surgemail.htm
To test SSL cert installation:
https://www.digicert.com/help/
http://certlogik.com/ssl-checker/
Ended up needing to install both the sm1.dimentech.com.crt and bundle.crt into surgemail. One important item was that there couldn’t be any spaces between each certificate block.