Help with Spamassassin Set up

I am trying to set up SpamAssassin Following

http://www.howtoforge.com/howto_spamassassin_clamav_procmail

but when i get to

chown testuser /home/www/web1/user/testuser/.forward

i get an error messages that reads

chown: 'testuser' : invalid user


Thanks

 

Does testuser exist in /etc/passwd?

 

no testuser is not in that file

 

Then it cannot work. But testuser is just an example, a placeholder that you should replace with your own user names.