Question : WLAN Mail for Exchange access via SonicWall Tz190

I have a Nokia E51 with Mail for Exchange.

Mail for Exchange works fine when connected to 3G but when connected to our wireless network (same network the actual exchange server sits on) Mail for Exchange refuses to connect.

Any ideas?

Answer : WLAN Mail for Exchange access via SonicWall Tz190

this seems to be a natloopback problem ; as from within your lan you are addressing the public address of your exchange server

You can either create a dns record on your internal DNS Server pointing to your exchange box or contact the support of sonicwall and ask them a fix for the natloopback issue.