Windows Mobile ActiveSync problem

[mabombo]

On nginx.log we have those type of error.

2009/02/07 11:46:49 [error] 1873#0: *2226 upstream timed out (110: Connection timed out) while reading response header from upstream, client: 83.225.166.35, server: epress1mta.service.epress.it, URL: "/Microsoft-Server-ActiveSync?User=utente1&DeviceId=E3185787C0EBDD331 A78C28362ABA2F1&DeviceType=PocketPC&Cmd=Ping", upstream: "http://192.168.111.69:80/Microsoft-Server-ActiveSync?User=utente1&DeviceId=E3185787C0EBDD331 A78C28362ABA2F1&DeviceType=PocketPC&Cmd=Ping", host: "epress1mta.service.epress.it"

And after this it happens the windows mobile can't recive mail via push mail

Why we have this error???
It's like mail server cut the connection with proxy

Help me

[bradb21]

I'm sure the next thing Zimbra is going to ask you for is your version of both Zimbra, and what type of phone and OS/Version. You might just want to go ahead and post those now.

[phoenix]

502 Bad Gateway - nginx
[SOLVED] zimbra-proxy limitations

[mabombo]

Ok my phone is htc tytan II with windows mobile 6.1
We have this kind of problem only with activesync. The web client works fine.
end during the first activesync connection i can recive mail, only after the error i can't recive mail anymore

Best regards

Mauro