[CentOS] Lstat & Dovecot

I am chasing a problem with dovecot generating an error:
lstat(/var/spool/virtual_mailboxes/[domain dir]/[user dir]/Maildir/cur)
failed: Permission denied
 
I first tried making the directory world readable, same error. Them
tried to lstat [the path] at the console and receive the error:
lstat: command not found
 
I have a manpage on lstat, but no file. "Yum provides" showed the
manpages, but no rpm I could find
 
What rpm is it in? (Or, have I started down a path that doesn't involve
this application & Dovecot isn't clear)
 
Thanks
Dave
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