[CentOS] Sieve Filter: All email not from friendly name?

I'm using Dovecot and Sieve under postfix on CentOS 6. Sieve filters are working 
great for a number of addresses. 

I'm trying to set up a sieve filter that catches all email NOT from Cron 
Daemon. Nearly all Admin messages come from 
	"Cron Daemon <username at servername>" 
so I want a Sieve Filter that will catch all addresses NOT from this address 
and stick it into a folder under INBOX/ProbablySpam but while other filters 
seem to work fine, this one does not. My best guess so far: 

if anyof (not address :all :contains ["From"] "Cron Daemon") { 
   fileinto "INBOX.ProbablySpam"; 
}
... 

It passes validation checking in KMail, but seems to catch all inbound 
messages. What am I missing? 

Thanks, 

Ben