Notes 8 EMail use os proxy server access when resolving HTML images, BUT my own Database CAN NOT use this os proxy server (redX images), Why?

Notes 8 EMail does use OS credentials for proxy server access when resolving HTML images, so this can display every HTML images successfully.

I have enabled my own Notes 8 Database to store EMails. My problem is that NOT ALL HTML images are diplayed.

Images without www can displayed successfully, for example:

http://emailcreator.contact-tool.com/swissgermany/newsletter205/images/Header_TopSeller_Corpo_Trackpoint.jpg

All images WITH www ARE NOT displayed (redX), for example:

<img src=3D"IBM Developer" width=3D639 height=3D71 border=3D0 alt=3D"">

All this images are displayed correctly with Notes 8 EMail.

It seems that my own Notes 8 Database cannot acces the os proxy server, used in IE.

If I use a modem to connect directly to the internet (from local replica my Notes 8 Database) instead using the company lan, every html images are displayed correctly.

Why are the www-images filtered out using my own Notes 8 Database, but not filtered by firewall using Notes 8 EMail?

Any ideas how to make this work?

Thanks

Regards,

Sam