sendmail error messages

[gs_stoller at juno.com]

        I am running  FreeBSD  4.3  (see  uname -a  below) and have
recently started getting the following message:
Mar 25 23:28:15  sendmail[1181]: k2Q3wGR00214: SYSERR(root): hash map "Alias0": 
unsafe map file /etc/mail/aliases.db: World writable directory

	It repeats with IDs  1298 ,  1328 ,  1357 ,  1439 ,  1466 , &  1491  in the brackets after 'sendmail'.  What significance is there to these numbers?
	I checked  /etc/mail/aliases.db  with 'll -d' and got
-rw-r--r--  1 root  wheel  32768 Jun 12  2001 /etc/mail/aliases.db
and as you can see it is not World writable.  What is going on, and how
do I stop these messages?

 
FreeBSD  4.3-RELEASE FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001
 jkh at narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC  i386