[Mailman-Users] Please help: confirmation redireted to post address!

[Long Li]

Dear All
When I switched the option "Where are replies to list messages directed? "
from "Poster" to "This List", all replies to "list-request"  are also
directed to list's post address. This happens when  new users confirm his
subscription by replying to "list-request" address which has been changed to
post address. Could someone let me know what may cause this? 
 
Thanks.
 
Long