i try to reverse proxy zimbra with apache2, it looks working, the login screen come. But when i try to login, always message come "(INVALID_PDU)". but Zimbra works and is accessable direct zxx.xxx.xx .


---> www.xxx.xx -> mod_proxy --> zxx.xxx.xx


<Location "/zimbra">
ProxyPass http://zxx.xxx.xx/zimbra
ProxyPassReverse /
</Location>

i cannot find any description whats "INVALID PDU".