One or more classes from the following Component Object Model (COM) DLL are not registered. COM DLL: %1 The Intersite Messaging ...

One or more classes from the following Component Object Model (COM) DLL are not registered. 
 
COM DLL:
%1 
 
The Intersite Messaging service using the SMTP transport depends on this DLL. 
 
User Action 
Verify that this DLL is present and registered. 
 
Register this DLL manually using following commands: 
regsrv32 /u %1 
regsrv32 %1 
 
If this event continues to occur, you might have an obsolete version of this DLL. Verify the version using the following command: 
filever %windir%\system32\%1 
 
Restart the Intersite Messaging service. 
 
Additional Data 
Error value:
%3 %2