Hello.

I've 3 portals like: 
my.domain.com  (portal number 6)
my.domain.com/test  (portal number 1)
my.domain.com/web (portal number 3)

And this pages:
my.domain.com/test/IPN.aspx
my.domain.com/web/IPN.aspx

This 2 pages are accesible writting those URL in the browser.
I'm using Friendly URL Settings.

The problem is that my.domain.com/test/IPN.aspx work OK when called from PayPal setting it as IPN Url, but my.domain.com/web/IPN.aspx seems to be unavailable for PayPal.

I've tested it using PayPal with and without the sandbox.

Any idea on why PayPal can't reach the page on the /web child portal?  
The fact that /test is the portal number 1 has something to do? because on /test works.

Thank you. 
Gino