ERROR: "Unable to resolve e-mail address user@domino.domain.com to a Lotus Domino user." (4209743)

Querying free/busy information of a Domino user from an Exchange mailbox might fail and Outlook debug logging reveals the following error in the Outlook free/busy log file:

<ResponseMessage ResponseClass="Error">
<MessageText>Unable to resolve e-mail address user@notes.domain.com to a Lotus Domino user.</MessageText>
<ResponseCode>ErrorMailRecipientNotFound</ResponseCode>

Please refer to the 'Additional Information' section for further information on how to enable debug logging for Outlook.

The targetAddress attribute of the contact object in Active Directory might not match the Internet Address field of the corresponding Domino person document due to a subdomain that might be used.

Example

• targetAddress on the AD contact object = user@domino.domain.com
• Internet Address of the Domino person document = user@domain.com

Coexistence Manager for Notes (CMN) requires the targetAddress attribute to be equal the Internet Address field in the Domino person document.

There are two options for solving this issue.

RESOLUTION 1

Change the Internet Address field in Domino to match the targetAddress attribute of the AD contact object.

RESOLUTION 2

Add a domain mapping to the Quest CMN Domino Free/Busy Connector Service configuration by performing the following steps:

1. On the CMN server, open the Free Busy Connector Management Shell
2. Run the following cmdlet: Set-CmnDominoFreeBusyConfig -SmtpDomainMappings domino.domain.com=domain.com
3. Verify the setting has been applied by running: Get-CmnDominoFreeBusyConfig
4. Restart the Quest CMN Domino Free/Busy Connector Service

This MSDN article provides further information on how to enable debug logging in Outlook: http://msdn.microsoft.com/en-us/library/bb397225(v=exchg.80).aspx