cPanel Pro 1.0 RC1 Redirects not working

[simi_id]

Hi,

I have a main domain a.com and also added an addon domain b.com

a.com
- b.com

Now I have

b.a.com = a.com/b.com

What I want is not to connect b.com to a.com, I want that b.com to be standalone.
So I have done 2 redirects:

b.a.com -> a.com/404.shtml
a.com/b.com -> a.com.404.shtml

First redirects works, while the 2nd is not working at all. How can I fix that ?

Thank you.

[cPanelTristan]

Could you clarify what is meant by the title "cPanel Pro 1.0 RC1"? cPanel Pro hasn't been used for a very long time, and it is no longer part of cPanel (nor available in WHM > Manage Plugins area as of 11.30). Any server still running it has likely not been updated recently.

[simi_id]

My fault, I looked into cpanel at bottom.
The version written above is cPanel Version 11.32.3 (build 21)

i have my own domain let's say a.com as a main domain on hosting server, a friend of mine has b.com which i've added him as an addon domain. both a.com and b.com are wordpress installs, b.com being a folder "B" into my public_html, which is a.com ... what I would like is that his domain b.com to not be accesible through my address, just to type his address b.com and not ... b.a.com or a.com/b ... while redirecting b.a.com -> a.com works, redirecting a.com/b doesn't work .. still opens his page .. thanks...