Hi i have some strange error when some user try to attach file bigger than about 160kb on outlook webmail, in cache.log i have: 2009/08/12 09:35:55| sslWriteServer: FD 64: write failure: (104) Connection reset by peer. 2009/08/12 09:45:25| sslWriteServer: FD 76: write failure: (104) Connection reset by peer. 2009/08/12 10:12:55| sslWriteServer: FD 54: write failure: (104) Connection reset by peer. 2009/08/12 10:20:10| sslWriteServer: FD 35: write failure: (104) Connection reset by peer. i tried with direct connection (without proxy) and i don't have any problem. some suggestion? thanks in advance Franz