Overview

This article describes the error and its resolution, which occurs when trying to enable the Mailbox Folder Structure Retrieval feature:
No mailboxes found associated with mailbox provided

The Debug logging shows the following details:
..\Core\DebugLogs\UMPoll.EWSPollTest.log
"error  ","UMPoll.EWSPollTest","error:DoTest: No Mailboxes Returned"

..\ASPNET\UI\DebugLogs\FolderStructureRetrievalWizard.log
"error  ","FolderStructureRetrievalWizard","ERROR:Create_ERR: Failed while testing connection, No Mailboxes found"
"error  ","FolderStructureRetrievalWizard","ERROR:Create_ERR: Requested finishing of steps (with error). Stopping on step: TestConnection. With error: No mailboxes found associated with mailbox provided."

Environment

• GFI Archiver
• Microsoft Exchange 2007 SP1 or newer or Microsoft 365 (previously known as Microsoft Office 365)
• Trying to set up the Mailbox Folder Structure Retrieval feature using the EWS protocol

Root Cause

1. Users have not been created in GFI Directory.
2. The user's email address in the directory service (Active Directory or GFI Directory) does not map correctly to the user object in the email environment. For example:
   1. GFI Archiver is installed into a Microsoft 365 mail environment
   2. A user has been created in Active Directory or GFI Directory: John Smith with the email address js@domain.com
   3. But the corresponding user object in Microsoft 365 has a different email address configured: johnsmith@domain.com

Resolution

Ensure that:

1. User objects have been set up and do exist in the directory service, which is used (Active Directory or GFI Directory).
2. The user objects in the directory service have the email address set to the very same address as the corresponding user in the mail environment.