DOCUMENT:Q196924  24-MAR-2001  [exchange]
TITLE   :XADM: Error Message: Extension SMTP Could Not Be Loaded
PRODUCT :Microsoft Exchange
PROD/VER::5.0,5.5
OPER/SYS:
KEYWORDS:exc5 exc55

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The information in this article applies to:

 - Microsoft Exchange Server, versions 5.0, 5.5 
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SYMPTOMS
========

When you try to open the properties of the Internet Mail Service, the following
error message may be displayed:

   Extension SMTP Could Not Be Loaded.

CAUSE
=====

The Imcadmin.dll file is causing a version conflict. To correct the problem, you
need to find the build number of the file (file properties, or the Filever
utility), and use that number to make a raw mode entry change.

WORKAROUND
==========

Perform the following steps at the computer that is running the Exchange Server
Administrator program to find the build number of the file:

1. Map a drive to the Exchsrvr folder of the computer on which the Internet Mail
   Service is installed.

2. In Windows NT Explorer, locate the Imcadmin.dll file in the following folder:

   Exchsrvr\Addins\Smtp\I386

3. Click the Imcadmin.dll file, and on the File menu, click Properties.

4. Click the Version tab, and write down the file version that is displayed
   here.

Perform the following steps at the computer that is running the Exchange Server
Administrator program to use the version number to make a raw mode entry
change:

WARNING: Using the raw mode of the Exchange Server Administrator program (admin
/r) incorrectly can cause serious problems that may require you to reinstall
Microsoft Windows NT Server and/or Microsoft Exchange Server. Microsoft cannot
guarantee that problems resulting from the incorrect use of raw mode can be
solved. Use raw mode at your own risk.

1. Start the Exchange Server Administrator in raw mode by typing the following
   at a command prompt:

   c:\exchsrvr\bin\admin.exe /r

2. In the Exchange Server Administrator program connected to the Internet Mail
   Service computer, click to expand the Configuration container, and then click
   Add-ins.

3. In the right pane of the window, click "Extension for Internet Mail Service
   I386".

4. On the File menu, click Raw Properties.

5. In the Attribute list, click File Version, and then click Editor.

6. Click File Version, and then click OK.

7. Change the build number to the build number that you found in Windows NT
   Explorer, and then click OK.

8. In the window "Extension for Internet Mail Service I386", click Set.


Additional query words:

======================================================================
Keywords          : exc5 exc55 
Technology        : kbExchangeSearch kbExchange500 kbExchange550 kbZNotKeyword2
Version           : :5.0,5.5
Issue type        : kbprb

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