Error with the Use of "SMTP"

When at the installation of the ixi-UMS Business Client Tools with the option "SMTP", no valid reachable mail server is stated or when the settings are changed in the respective INI-file subsequently, the following error message may pop up:

After that, the "Prnd.exe" must be terminated in the task manager and restarted by double-click on the "PrnD.exe"  in the directory ..\ixi-UMS Business Client Tools.