I just went back and looked and in your master.cf, your Postfix is still chrooted (this is the Ubuntu/Debian default because it's more secure). The guide doesn't tell you to change this, but you need to. So this is a bug in the documentation. See http://www.postfix.org/DEBUG_README.html#no_chroot for information on how to turn off chroot.
I just went back and looked and in your master.cf, your Postfix is still chrooted (this is the Ubuntu/Debian default because it's more secure). The guide doesn't tell you to change this, but you need to. So this is a bug in the documentation. See http:// www.postfix. org/DEBUG_ README. html#no_ chroot for information on how to turn off chroot.