deferral: /bin/sh:_./Maildir/:_is_a_directory/

[Stephen Froehlich]

I have a couple of users who aren't receiving mail with the following error
message

delivery XX: deferral: /bin/sh:_./Maildir/:_is_a_directory/

These users are somewhat unique in that they were created before I had a
maildir in /etc/skel, however, I su'ed to them and ran maildirmake to give
them maildirs.

Their home dirs (/home/uname) have permissions of 700 (owned by the user)
The Maildir is also 700, and owned by the user

Any idears?

Thanx,
Stephen