lockfile not found?

From: Mark Schlam <mslist_at_castle.beaver.edu>
Date: Tue, 07 Apr 1998 11:31:31 -0400 (EDT)

Dear Managers:
Any ideas what the sirihs00.lock not found refers to in the msg below?

# cd /var/spool/mail
# ls *.lock
sirihs00.lock not found
dimauroc.lock wilsoj93.lock
# ls sirihs00.lock
#
Thanks,
Mark Schlam
Received on Tue Apr 07 1998 - 17:29:48 NZST