FIX: Exchange Portlet (5.5 and 2000) - MAPI_E_NOT_FOUND

Question

I've found out what's causing
[Collaboration Data Objects - [MAPI_E_NOT_FOUND(8004010F)]]
to appear in test.asp. (By the way, if you are getting this in
test.asp, your portlets will not work).
EXPLANATION: When an ASP page uses CDO to logon to an Exchange
mailbox, IIS creates a temporary .mmp file to store
necessary profile information. However it stores the temporary
file in the directory where Windows is installed. Users who do
not have permissions for that directory will not be able to
access the .mmp file and they will get the
MAPI_E_NOT_FOUND error.
FIX: Configure the Windows Messaging Subsystem to store the
.mmp file to a directory that users have access to.
- Start Registry Editor (regedt32.exe) on the machine that has
IIS.
- Go to the following key:
HKEY_LOCAL_MACHINE/Software/Microsoft/Windows Messaging
Subsystem
- On the Edit Menu, click Add Value.
- Value Name: ProfileDirectory
- Data Type: REG_SZ
- String: Path to the directory you want the .mmp files to be
created in. E.g., C:\temp
- Make sure everyone has change permissions for the temp
directory.
For more info see this
[URL=http://support.microsoft.com/support/kb/Articles/q254/5/67.a
sp]Microsoft article.
James

Answer 1

As I mentioned that There 1s "Schedule+EMS Interface" for User B,C and this is the root cause but I don't know why. I did following troubleshooting:
1. User A send an invitation to User B and C, got NDR
2. User F (me) send an invitation to User B and C, didn't received NDR although user didn't/did accept the invitation.
It is weird. To solve the issue I delete "Schedule+EMS Interface" for User B,C and User A and me didn't received any NDR anymore.
Case solved but still puzzling.