Archived:Required capabilities for messaging components (MTM) in S60 3rd Edition
S60 3rd Edition and S60 3rd Ed, FP1 devices impose heavy requirements for messaging DLLs in terms of platform security capabilites.
All client-side MTM components (Client MTM, UI MTM, and UI Data MTM DLLs) need to have ALL -TCB capabilities because they can be loaded by any application that can have any set of capabilities from that capability space.
A server-side MTM component, that is, an MTM DLL loaded by the messaging server, requires capabilities equal to the loading process. The server-side MTM component should have exactly these capabilities:
Given these heavy capability requirements, any (client-side) MTM implementation has to go through the Symbian Signed process and get manufacturer approval.
ALL -TCB capabilities for client-side MTMs are no longer required from S60 3rd Edition, Feature pack onwards: Required capabilities for messaging components (MTM) (Known Issue)