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Coexistence Manager for Notes 3.8.4 - User Guide

About the CMN Documentation Suite Introduction CMN Directory Connector
Directory Connector overview Installation and configuration DC Management Console Connector Creation Wizard Connector Advanced Settings Starting and stopping the Directory Connector service
CMN Mail Connector
Mail Connector features overview Coexistence mail routing basics Deployment of CMN Mail Connector Installation Configuration Mail Connector Management Console
CMN Free/Busy Connector The Log Viewer Appendix A: Known limitations Appendix B: Troubleshooting Appendix C: CMN Logs

Management Console screen: Mail Connector | Resource Mapping

| Resource Mapping

Specify a .tsv file that defines the Notes resource names and associated SMTP addresses. These are associations CMN needs in order to process Exchange users’ attempts to schedule Notes resources.

Note that the Mapping File must already exist before you can specify it in this screen. The Notes resource mapping file can be populated using the Import from MNE button in the Management Console or created manually, as described in step 1 of the Configuration process earlier in this chapter.

Use the Browse button ([...]) to locate and specify the path (including filename) of the resource mapping file you created in step 1 of the Mail Connector Configuration process.

The Management Console then displays the file path in the Mapping File field, and imports its data into the table below. Note that this is a read-only table; its contents cannot be edited on this screen.

CMN Free/Busy Connector

Free/Busy Connector overview

The Notes and Exchange environments implement calendar free/busy queries differently, so by themselves cannot read the availability of users on the other system. For full calendar functionality, the calendar applications on both sides need some way to determine the availability of users within the other environment.

CMN’s Free/Busy Connector (“FBC,” or “F/B Connector”) is a coordinated set of applications that enable Exchange and Domino to query the calendar availability of each other's users. Sharing free/busy data between Notes and Exchange simplifies calendar updates when accepting a meeting invitation, or changing the day/time or canceling a meeting, or making some other change to an existing meeting or recurring meeting series.

When a user in one environment requests free/busy information about a user in the other environment, the asking server’s query must be translated into a form that the other server will understand. Likewise, the data reply has to be translated into a form that the asking server will understand. This is true of free/busy queries and replies in both directions, and a separate translation application is required for each direction.

In addition to the query, translation and reply functions, both the Exchange and Domino servers require a service to facilitate data communications between themselves and external data sources (e.g., each other). Exchange uses Exchange Web Service (EWS) for communications between Exchange and other applications, while Domino requires a server task. And finally, Exchange also uses an Autodiscover service to track and report the location (URL) of the EWS.

In typical configurations, CMN’s bidirectional Free/Busy Connector contains five subcomponents to facilitate the flow of F/B queries and replies between Exchange and Domino:

Free/Busy Autodiscover Web Service: Tracks the location of the EWS (see below), reporting the EWS URL to Exchange upon each outbound F/B query (which tells Exchange where to send its query).
Free/Busy Connector EWS: Facilitates communications between the Exchange and Domino servers, for transmitting Exchange F/B queries to Domino, and receiving F/B information from Domino.
Domino Free/Busy Connector Service: Translates Exchange F/B queries into a form that Domino can process, and then translates F/B data (Domino’s reply to a query) from Domino form into a form that Exchange can process.
QCalCon: A Domino server task for communications between the Domino and Exchange servers (Exchange F/B queries to Domino, and Domino’s F/B information)—performing essentially the same function for Domino that the F/B EWS performs for Exchange.
Exchange Free/Busy Connector Service: Translates Domino F/B queries into a form that Exchange can process, and then translates Exchange F/B data (reply to a query) into a form that Domino can process.

For technical reasons, QCalCon must be installed on the Domino server. The other four F/B Connector components may reside on a single server, as shown above.

However, many production environments have sufficient query volume to warrant separate servers to ensure optimal per­formance. These multi-server configurations appear in the two scenario narratives described and illustrated below.

These scenarios and the accompanying illustrations show the roles these components serve within the overall scope of CMN’s Free/Busy Connector.

Outlook user retrieves F/B data for a Lotus Notes user

The illustration below shows how three F/B Connector components fit into the data flow when an Outlook user requests free/busy data for a Notes user. The process described and illustrated here is for a disparate namespace or subdomains scenario, but the F/B Connector also supports a shared/single namespace with either a local proprietary Exchange or Office 365.

In this scenario: Sally (in Outlook) wants to book a meeting with Joe (in Notes). Joe’s address is joe@d‑ Exchange resolves d‑ through DNS.

DNS has a zone called d‑ with a host autodiscover.d‑ The host name must match the common name (of the certificate you requested) where CMN is installed.

The step numbers in this simplified process narrative correspond to the circled numbers in the illustration:

The Exchange server asks the F/B Autodiscover Web Service (at autodiscover/autodiscover.xml): "Where is the EWS that can relay my free/busy query to Domino?"
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