Unexpected response. (400) (Full Version)

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alexyug -> Unexpected response. (400) (11.Mar.2010 7:52:56 AM)


The problem is:
"The Exchange server issued an unexpected response. (400)" message appears when tryes to send message with attachment throught OWA. Without attachment messages does sends without any problem. OWA (front-end) and Exchange (back-end) are in different sites. In both sites Firewalls are installed.

What ports must be open on the Intranet firewalls between front-end and back-end Exchange servers?

Thanks in advance.


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