Working with backup sets : Email message backup sets (Windows) : About Email message backup sets : Microsoft Outlook backups (DS-MLR)
 
Microsoft Outlook backups (DS-MLR)
DS-Client supports the backup and recovery of Microsoft Outlook data using DS-MLR. DS-MLR is a Windows service that searches for email messages based on a user-defined filter, then transforms each email message into a data stream, and passes this stream to DS-Client for processing for backup to DS-System. DS-MLR treats each email object as a separate backup item.
During backup, DS-Client scans all items and backs up only the new or changed items. Changed items are processed as deltas and only the changes are sent to DS-System. Email messages are saved (along with any attachments) as individual objects on DS-System. You can perform message-level backups and restore email data at the message level to the original location or an alternate location.
IMPORTANT:  The DS-MLR service must be installed and running on the same machine where the email messages are stored and DS-Recovery Tools must be enabled in DS-System by your service provider. For more information, see the Client Software Installation Guide and DS-System User Guide.
DS-MLR registry keys:
The DS-MLR installation configures various registry keys in the following registry tree of the computer where the DS-MLR is installed:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\DS-Message Level Restore\Parameters
The following table lists the registry keys and describes how each registry key affects the operation of DS-MLR.
 
Table 5 DS-MLR registry keys for email server types with which DS-MLR is used
Registry key
Type
Default
Description
LastRunningDSMLR
String
 
The version of the last dsmlr.exe that ran on the local computer.
LogConfiguration *
String
 
The path to the logconf_mlr.cfg file.
MaxThreadLog *
Dword
100
Maximum number of logs DS-MLR keeps for each thread.
ThreadTimeout *
Dword
0
The wait time in seconds before killing a non-responding thread.
NOTE:  An asterisk (*) indicates that the registry key is not installed by default and can only be added manually.