[Mailman-Users] how to configure aliases in two server?

Dear Everyone: I installed mailman in one computer, and using the MTA(qmail) which runs on another computer, after I created a new list,how to add the list of aliases generated? for example: I add one line into the /etc/aliases of MTA server spt: "|/home/mailman/mail/wrapper post spt" but how can MTA find "|/home/mailman/mail/wrapper "?

thanks in advance.

Tonny.