Connecting to Other Messaging Systems

Install the Calendar Connector Add-In on Lotus Notes

To allow Lotus Notes users to query for an Exchange user's free and busy information, a special task called the Exchange Calendar Connector add-in (Excalcon.exe) has been created to run on the Lotus Notes server. When you install Calendar Connector, the Calendar Connector add-in is installed in the \Exchsrvr\bin\Calcon directory by default.

Note   The Lotus Notes Server add-in is only for Windows NT and Windows 2000 Intel-based computers. If you are using Lotus Notes on an Alpha or UNIX-based computer, you must use another Intel-based Lotus Notes server to connect to Exchange.

To install the add-in on Lotus Notes:

  1. On the Lotus Notes server, start Domino Administrator. If you are using a client version 4.x, on the File menu, click Tools, and then click Server Administration.
  2. On the Exchange server, open the directory \Exchsrvr\bin\Calcon\, and then copy Excalcon.exe to the Notes directory on the Lotus Notes server. For example, if Lotus Notes R5 is installed in the default location <drive>:\Lotus\Domino\, then this is where you would copy Excalcon.exe to.

  3. Note   The Lotus Notes Server add-in runs on a Lotus Notes server running on WinNT 4.0 and Windows 2000.

  4. To load the add-in, on the Lotus Notes server, in the Domino server console, type the following:
    load excalcon Exchange_Server_name Calendar_system [nodomain|domain]

    Tip   To force appending "@domain" to the lookup string, include the domain after Calendar_system. The following example command lines explain the parameter usage:

    To never append the domain, use

    load excalcon Exchange_Server_name Calendar_system nodomain

    To always append the domain, use

    load excalcon Exchange_Server_name Calendar_system domain

    To allow Excalcon.exe to append the domain as needed, use,

    load excalcon Exchange_Server_name Calendar_system

    If you do not append a specific domain, or if you do not use "nodomain", then Excalcon.exe will append the domain as needed during query lookup. If Excalcon.exe is running on a 5.x server, the domain will be appended. If Excalcon.exe is running on a 4.x server, the domain will not be appended.

  5. To verify that the add-in loaded properly, at the console, type
    show task

    Locate the task name "Excalcon," and the status line will provide the information in the following syntax:
    Exchange Cal conn <status> to <exchange server name> for <calendar system name>. Stats=<a> <b/c> <d>

    The variables in the above status line will be replaced with information about your specific environment. The variables can have the following values:


    Connected or Not Connected, depending on whether or not the task is currently connected to Calendar Connector.

    <Exchange server name>

    The name of the Exchange computer on which the Calendar Connector that this task is communicating with is installed.

    <calendar system name>

    The name of the calendar system.


    Total number of Exchange calendar requests made from Lotus Notes.


    Average number of invitees over the average response time, in seconds, per Exchange calendar request made from Lotus Notes.


    Maximum response time for all calendar requests.
  6. To load the add-in task, Excalcon.exe, automatically, add the Excalcon.exe task to the Lotus Notes server's Notes.ini file. The addition causes Excalcon.exe to be loaded each time the Lotus Notes Domino Server is started. On the Lotus Note server, open the Notes.ini file, and then add the following to the "ServerTasks=" line:
    ,Excalcon Exchange_Server Calendar_System [nodomain|domain]

    For example, the task line may appears as follows:

    ServerTasks=EXCALCON Server1,Billing,Replica,Router,Update,Stats,AMgr,Adminp,Sched,CalConn,Report,Event,HTTP,