I've got a GW 2012 domain. My organization has 2 other divisions that have their own GroupWise systems but use my GWIA so we can all keep the same email domain. We are linked via GW to GW External System Synchronization. This builds a global address book between our 3 GW systems, and lets them use our GWIA and WebAccess.

One of the admins in the other division needs to upgrade from GW 8. He wants to upgrade to GW 2014 but is concerned he may not be able to route external email in and out of our GW 2012 GWIA any longer. I've looked at the compatibility matrix and can't tell if this will work or not either.

Will his GW 2014 system that uses my GW 2012 system's GWIA still be able to send and receive external email?