qmail & dns

[reach_prashant]

hello friends 

sorry for asking you too many silly questions , but its just bcoz i want to
know more about qmail  


   so these questions just keep popping up  , 

   
 how qmail will send the message from  one domain 

  say a  [EMAIL PROTECTED]  to  someother domain   say [EMAIL PROTECTED]


   when DNS comes in to the picture , is qmail it self starts query
authorative dns server for that domain or its a job of some other programme
 bundled  with qmail-1.03  

  thanks once again ,
  with warmest regards 
 Prashant Desai