메일이 왔다고 해서 /var/spool/mail 에 가보면
root 라는 파일이 있는데 그 내용은 아래와 같습니다.
 From root  Sun Mar 25 04:03:50 2001
Return-Path:<root at localhost.localdomain>
Received:(from root@localhost)
        by localhost.localdomain (8.11.0/8.11.0) id f2OJ3oJ01851
        for root; Sun, 25 Mar 2001 04:03:50 +0900
Date: Sun, 25 MaFrom root  Sun Mar 25 04:03:50 2001
Return-Path:<root at localhost.localdomain>
Received:(from root@localhost)
        by localhost.localdomain (8.11.0/8.11.0) id f2OJ3oJ01851
        for root; Sun, 25 Mar 2001 04:03:50 +0900
Date: Sun, 25 Mar 2001 04:03:50 +0900
Message-Id:<200103241903.f2OJ3oJ01851 at localhost.localdomain>
From: root at localhost.localdomain (Cron Daemon)
To: root at localhost.localdomain Subject: Cron <root@localhost> run-parts /etc/cron.daily
X-Cron-Env:<SHELL=/bin/bash>
X-Cron-Env:<PATH=/sbin:/bin:/usr/sbin:/usr/bin>
X-Cron-Env:<MAILTO=root>
X-Cron-Env:<HOME=/>
X-Cron-Env:<LOGNAME=root>
 /etc/cron.daily/tripwire-check:
 ****    Error: Tripwire database for localhost.localdomain not found.    ****
**** Run /etc/tripwire/twinstall.sh and/or tripwire --init. ****
  위와 동일한 에러메세지의 메일이 계속 주기적으로 날라옵니다.
뭐가 문제죠?