Target Exchange server's name vs. its IP address

On the first screen of the Target server connection wizard, you can decide to configure the connection manually. In such a case, we recommend using the name of the server instead of its IP. If, however, you need to use the IP address of the Target server, you need to configure its PowerShell Virtual Directory in IIS to allow basic authentication. If you do not do this, the program will not be able to create target mailboxes or to grant you impersonation rights to users' mailboxes.

Fig. 1. Warning displayed while using the IP address of the Target server.

Alternatively, you can create the target mailboxes and grant the impersonation rights manually. While matching the target mailboxes with the source mailboxes, you will need to type each address of the target mailbox manually as it will not be listed automatically.