“You have new mail” on Maildir

Maildirで “You have new mail” を表示させるには
/etc/pam.d/login で
session optional pam_mail.so standard noenv dir=~/Maildir
http://lists.debian.org/debian-user/2005/01/msg02544.html
http://pc5.2ch.net/test/read.cgi/unix/986398141/