Problem on resolving url of document between intranet and extranet

Hi,

We have the current configuration on our Intranet/Extranet SharePoint 2013 platform.

• 2 webapplication (portal_content and MySite)
• 2 SharePoint servers, one Front and App Servers

We 've setup configured the alternate access mapping for Intranet and Extranet access for the 2 webapplications:

• Default: http://spsapp (portal_content), http://spsapp:8080 (MySite);
• Intranet: http://intra(portal_content), http://intra:8080 (MySite);
• Extranet: https://extra.d-t.com (portal content), https://extra.d-t.com:8080 (MySite).

We 've associated an Office Web App Server(SPSOWS), in context internal_http Server

Problem

For the intranet no problem, because the URLs are always solved even when going in the "Default" (name of the Windows Server) access;

For Extranet, multiple problems, due to the non-continuity of access, for example:

Photos of employees cannot be shown in the newsfeeds's the portal_content sites.

They are indeed stored in SkyDrive for each employee, the path http://spsapp:8080/ is not resolved on Extranet as https://extra.d-t.com.

Am I missing something in the configuration ?

Thanks for help