addon domain do they create duplicate content if not 301 redirected

[pekingu]

i have found that addon domains are recheable not only from

myaddondomain.com

and

www.myaddondomain.com

but from

myaddondomain.mymaindomain.com

and

www.myaddondomain.mymaindomain.com


do i should redirect any addon domain from redirects option with a permanent 301 to the right

myaddondomain.com

or

www.myaddondomain.com

and wht if someone try to get directly to a subfolder of my addon domain after the 301

myaddondomain.mymaindomain.com/somefolder

will that url work after 301 redirect of myaddondomain.mymaindomain.com so creating again duplicate content and forcing to create 301 redirection for every single folder in myaddondomain

 

[cPanelDon]

It is normal for a sub-domain of the primary domain to be aliased to the add-on domain; this does not duplicate content, but does make it possible to be used as an alternate access method.

 

[InstaCarma_Tech]

i have found that addon domains are recheable not only from

myaddondomain.com

and

www.myaddondomain.com

but from

myaddondomain.mymaindomain.com

and

www.myaddondomain.mymaindomain.com

This is a very normal behavior and should not cause any problems for you whatsoever.