[fetchmail] Fetchmail and delivery rules

Hi all, 

I have an email account at an ISP with a few aliases. Is it possible to get 
fetchmail to retrieve mail from that account, and deliver it to different 
accounts on my local MTA (qmail). 

At the moment, if i use smtpname, all mail (even addresses to the aliases) 
go to one account. I would like to somehow get email sent to different 
aliases sent to the valid mailbox's on my server. 

thanks in advance,
Brett