cron messages

[Patrick Siglin]

I keep getting these messages. How do I make them go away? I used to have 
sendmail and now running postfix. I know that it is complaining about 
sendmail? Here is the message below. Any help is greatly appreciated.

Date: Wed, 1 Mar 2006 16:40:01 -0600 (CST)   
From: root at list.memphistw.org (Cron Daemon)      
To: root at list.memphistw.org
Subject: Cron <smmsp at list> test -x /usr/share/sendmail/sendmail 
&& /usr/share/sendmail/sendmail cron-msp  All headers  
   
mkdir: cannot create directory `/var/run/sendmail/msp': Permission denied  


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