In Windows 95, Microsoft Mail has now been integrated into Microsoft Exchange. Your existing Microsoft login and password which had been entered into the External Mail dialog box will not be recognised by Microsoft Exchange. To send mail to and from Microsoft Exchange, enter MS Exchange Settings into the MAPI login section and delete your existing password.
External Mail dialog box
You will now be able to use your MS Mail address book via MS Exchange. If OfficeTalk informs you during the login procedure that your password failed, check that your External Mail dialog is identical to the one above. If you still get a message telling you that the password has failed, go to your Control Panel in Windows 95 and double click on the Mail and Fax Icon.
The Microsoft Exchange Profiles dialog box will appear. Press the 
button and the following dialog box will
appear :
Microsoft Exchange Profiles dialog box
This lists all your MS Exchange profiles. If you changed the default Exchange profile from MS Exchange Setting please type this into the External Mail box as your MAPI login.