How to add entries for Exchange services to Mapisvc.inf

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This article was previously published under Q294470

Summary

Certain MAPI configurations may not include entries in the Mapisvc.inf file for Microsoft Exchange services, even though the appropriate MAPI providers for Exchange have been installed. For example, you may install Exchange Administrator on a server to get a MAPI implementation.

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More information

Mapisvc.inf holds entries for the available MAPI services on a particular computer. Installing Exchange Administrator installs a fully functional version of the MAPI subsystem, but does not update Mapisvc.inf. If you want to develop server applications that need to log on to the Exchange message store, Mapisvc.inf must contain the appropriate entries.

To add entries to Mapisvc.inf for the Exchange Message Store service, follow these steps:

In Notepad, create a new text file. Paste the following text in the file, and save the file as Msems.inf:

[Services]
MSEMS=Microsoft Exchange Server
[Default Services]
MSEMS=Microsoft Exchange Server
[MSEMS]
PR_DISPLAY_NAME=Microsoft Exchange Server
Sections=MSEMS_MSMail_Section
PR_SERVICE_DLL_NAME=emsui.dll
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_SERVICE_ENTRY_NAME=EMSCfg
PR_RESOURCE_FLAGS=SERVICE_SINGLE_COPY
WIZARD_ENTRY_NAME=EMSWizardEntry
Providers=EMS_DSA, EMS_MDB_public, EMS_MDB_private, EMS_RXP, EMS_MSX, EMS_Hook
PR_SERVICE_SUPPORT_FILES=emsui.dll,emsabp.dll,emsmdb.dll
[EMS_MDB_public]
PR_RESOURCE_TYPE=MAPI_STORE_PROVIDER
PR_PROVIDER_DLL_NAME=EMSMDB.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_FLAGS=STATUS_NO_DEFAULT_STORE
66090003=06000000
660A0003=03000000
34140102=78b2fa70aff711cd9bc800aa002fc45a
PR_DISPLAY_NAME=Public Folders
PR_PROVIDER_DISPLAY=Microsoft Exchange Message Store
[EMS_MDB_private]
PR_PROVIDER_DLL_NAME=EMSMDB.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_STORE_PROVIDER
PR_RESOURCE_FLAGS=STATUS_PRIMARY_IDENTITY|STATUS_DEFAULT_STORE|STATUS_PRIMARY_STORE
66090003=0C000000
660A0003=01000000
34140102=5494A1C0297F101BA58708002B2A2517
PR_DISPLAY_NAME=Private Folders
PR_PROVIDER_DISPLAY=Microsoft Exchange Message Store
[EMS_DSA]
PR_DISPLAY_NAME=Microsoft Exchange Directory Service
PR_PROVIDER_DISPLAY=Microsoft Exchange Directory Service
PR_PROVIDER_DLL_NAME=EMSABP.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_AB_PROVIDER
[MSEMS_MSMail_Section]
UID=13DBB0C8AA05101A9BB000AA002FC45A
66000003=01050000
66010003=04000000
66050003=03000000
66040003=02000000
[EMS_RXP]
PR_DISPLAY_NAME=Microsoft Exchange Remote Transport
PR_PROVIDER_DISPLAY=Microsoft Exchange Remote Transport
PR_PROVIDER_DLL_NAME=EMSUI.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_TRANSPORT_PROVIDER
66090003=40000000
660A0003=0A000000
[EMS_MSX]
PR_DISPLAY_NAME=Microsoft Exchange Transport
PR_PROVIDER_DISPLAY=Microsoft Exchange Transport
PR_PROVIDER_DLL_NAME=EMSMDB.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_TRANSPORT_PROVIDER
66090003=00000000
[EMS_Hook]
PR_DISPLAY_NAME=MS Exchange Hook
PR_PROVIDER_DISPLAY=MS Exchange Hook
PR_PROVIDER_DLL_NAME=EMSMDB.DLL
PR_SERVICE_INSTALL_ID={6485D26A-C2AC-11D1-AD3E-10A0C911C9C0}
PR_RESOURCE_TYPE=MAPI_HOOK_PROVIDER
PR_RESOURCE_FLAGS=HOOK_INBOUND

Use Mergeini.exe to merge the Msems.inf file into Mapisvc.inf. Mergeini.exe is a utility that comes with the Microsoft Platform Software Development Kit (SDK). The syntax is as follows:
```
mergeini <full path to msems.inf> -m
					
```

It is possible to leave out the transport sections from above when modifying your MAPISVC.INF file. This would not affect clients that log in with the MAPI_NO_MAIL flag set, such as NT services. However, transport-related functions (such as EnumAdrTypes and IMAPISession::MessageOptions) will not work properly.

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