I am following http://blog.edseek.com/~jasonb/articles/exim4_courier/ this guide to setup a mail server and I am getting this error when I try restart exim.
[....] Stopping MTA for restart:2013-07-07 07:33:17 Exim configuration error in line 440 of /var/lib/exim4/config.autogenerated.tmp:
error in ACL: unknown ACL condition/modifier in "warn spam = nobody:true"