Just contact SmarterMail sales and explain what you are doing, and they'll set your key to allow both boxes.
It's pretty much automatic when you're staying with the same version. I have a feeling that SmarterTools licensing server doesn't like the two different versions.
Bruce Barnes
ChicagoNetTech Inc
brucecnt@comcast.net
Phonr: (773) 491-9019
Phone: (224) 444-0169
E-Mail and DNS Security Specialist
Network Security Specialist
Customer Service Portal: https://portal.chicagonettech.com
Website: https://www.ChicagoNetTech.com
Security Blog: http://networkbastion.blogspot.com/
Web and E-Mail Hosting, E-Mail Security and Consulting