incoming log /' domain

[reach_prashant]

  
   hello friends 

     i am using qmail to send/receive mails for around 100 domains 
now i want log of incoming mails on per domain basis 

   how can i do this  ?  
  i am running qmail-smtpd under tcpserver ,  i also want to log
qmail-smtpd  activity for outgoing mails  on a perdomain basis , 


    thanks & regards 
 Prashant Desai