When trying to login in eB Director if you are not able to connect the community on different server it gives "eB Proxy Error"
1) Try to Restart the eB indexing services through Computer Management.
2) Try to reset a client resolver cache using the ipconfig command as this will reset the contents of the DNS client.
a) Open the command prompt (Start> All Programs > point to Accessories and click on Command prompt)
b) Type ipconfig/flushdns.
Hope it will work for you!