I didn't do anything different from the description given in the HOWTO "The Perfect Setup of ISPConfig for Suse 9.3". Hope this gives you the answer you wanted.
Is the problem with the open rely issue solved by applying the corrections you've suggested?
Not sure about the Suse setup, but it should not be there!
Maybe do a rootkit scan, to see if you are okay?
More info @ www.rootkit.nl/