DirectoryLink is a tool used for getting a list of Active Directory users from your on-premises Active Directory and synchronizing it to Smarsh Hosted Services Active Directory. It allows you to update user properties with the information gathered from your Active Directory.


    • synchronization is one-way only and all user properties will be overwritten by the values from your in-house Active Directory.
    • DirectoryLink overwrites the UPN and Primary email address of the mailbox in the CONTROL PANEL if your on-premise user UPN is in the email address format and its domain is registered under the Domain Names section of CONTROL PANEL (e.g. and is listed under Services > Domains). If your on-premise user UPN is not in the email address format and/or the domain is not listed under the Domain Names section of CONTROL PANEL (e.g. user@domain.local or, DirectoryLink will not overwrite UPN and Primary email address in the CONTROL PANEL.


    • Passwords synchronization occurs only during the password reset operation. As a result, any existing user passwords that were set prior to installation of the DirectoryLink service will not be synchronized. Please instruct your users to reset their passwords after DirectoryLink service installation. If some of your passwords are not being synchronized, please make sure that DirectoryLink service is deployed on all domain controllers in the forest with the same DirectoryLink user name and password on all domain controllers. Maximum propagation time for the password change is 15 minutes.

Installation steps:

Step 1: Download DirectoryLink installation package.

Step 2: Check the domain controller requirements.

Step 3: DirectoryLink installation.

Step 4: After installation.

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