Advice on email and filesharing from USA to Shanghai

I have a client based in the USA but has a small office in Shanghai. There are two related issues going on that I need some advice from someone with experience in the USA and Asian markets. I don't know exactly what speed Internet connection they have in the Shanghai office and I don't know anything about the Internet infrastructure in Shanghai.
1. We have an Exchange 2010 server in the US. We have connected Shanghai people with Outlook Anywhere. Sending emails often take a very long time to send - 10 to 15 minutes. These emails supposedly have no attachments and thus are not very large. I do not believe that Outlook 2010 is showing Disconnected from the server.
2. They have been using Dropbox consumer for transferring files, but have speed issues, and have had an issue with a critical file that disappeared from Dropbox. Is there a business class file sharing service that has reasonable prices, but also has the data synced from US based data centers to an Asian datacenter. This should allow for quicker file sharing.
Thanks for help and for sharing any experiences in this area.
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Brian BConnect With a Mentor Independant Technology ProfessionalCommented:
It sounds to me like it's more to do with the connection speed than the service you are using. You might try running some tracert commands between the offices and see what kind of numbers you are getting back. If there is a specific hop that is slowing things down, you might be able to speak to your internet provider about using a different route for your traffic.

1. Make sure your remote users are running Outlook in chached mode. It probably won't speed up sending, but it might help avoid their software being locked up when they send or receive.

2. Depending on the sensitivity of your documents, you might be better to avoid file sharing services like Dropbox. Perhaps using a VPN or DirectAccess connection between your office and Shanghai would work better. You can achieve this with existing servers. If you can put in some extra money, perhaps an "accelerated" solution like using dedicated hardware or getting a third party tunnel provider would be better.
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