I can get some services (ipswtich.com-Imail mail services) to run correctly when startet under the "Administrator" account of our domain. They run on a domain controller. These services need access to login information because the ADS-accounts are used for login into the web mail interface. I created an account "WebmailUser" which is in every group the administrator is in (Administrators, Domain-Admins...). Still the authentification with ADS login credentials in the web interface works only if I use the "Administrator" account. What is wrong? I don't want to use the administrator.