Oliver Schulze L. wrote:
  

Hi,
I wonder if it posible to replace qmail + vpopmail with sendmail +
    

dovecot?

Sure, anything is possible, but if you are trying to get away from 
qmail+vpopmail, you should probably move to postfix instead of sendmail 
(unless you /like/ pain ;).  Sendmail is a monolithic monstrosity that 
is barely able to be managed by mortals.  Postfix is designed (like 
qmail and vpopmail), as a series of small programs that do one thing and 
do it well.  There should be a FAQ entry for switching to Postfix 
virtual users from vpopmail; check the Postfix site...

John