Why can't I copy .zip files from a server to a server in a different domain?

Here's the solution we hit on today.

  1. Run Internet Explorer on the non-build server (the 2003 R2 server).
  2. Tools > Options
  3. Security tab
  4. Highlight Local Intranet and click Sites.
  5. Click Advanced.
  6. Uncheck the "Require server verification (https:)" box.
  7. Add our server to the list of sites, in this format: file://ourservername.ourdomainname.org.
  8. Close and save all dialogs.

This fixed the .zip file problem. After we did this, we ran the build again and it was successful, including the step that copies the .zip files.

As best we can tell, the server on the other domain wasn't recognizing our build server (and its domain) as being part of the same local network.