SymptomsParallels Panel 9.x uses MDaemon as its Mail Server component.
During every new domain creation procedure via Panel the mail server is restarted.
Resolution1. It is necessary to install the latests Microsoft Visual C++ 2005 Redistributable Package (see the Microsoft article),
2. Then replace the %plesk_bin%\mdaemonproviderw.dll file with the attachment. See the http://kb.sp.parallels.com/en/1802 article about hot-fix installation procedure.