CPUU fails to send notification message when running in context of mailbox owner or the service account and records the following warnings and errors :
[Warning] Cannot attach the file by value. Trying to attach by reference.
MAPI result: 0x80004005, Description: MAPI_E_CALL_FAILED
Stack: 0041A8A5 00418AF3 004D4CF5 005602FB 005632ED 005671C5 005BE75C 005BC92F 0042714D 004269CC 00435E40 00617D51 BaseThreadInitThunk RtlInitializeExceptionChain RtlInitializeExceptionChain
[Warning] Cannot send message from profile 'Outlook'.
MAPI result: 0x80004005, Description: MAPI_E_CALL_FAILED
Stack: 0041A8A5 00418AF3 0056332C 005671C5 005BE75C 005BC92F 0042714D 004269CC 00435E40 00617D51 BaseThreadInitThunk RtlInitializeExceptionChain RtlInitializeExceptionChain