Hi I installed postfix and dovecot and now I am fixing the issues. Most of them I was able to sort out with reading through to tons of websites. But one (hopefully) last issue is still open: All incoming mail are in the folder /var/spool/mail/root. I guess they should be delivered to /var/spool/mail/vmail Any idea what is causing this issue and what I should check to resolve it? Thanks in advance for your help!