Using Exchange Online Protection With Backup Linux Server

Hello,

I have exchange 2010 running on SBS 2011. I would like to use Exchange Online Protection in standalone mode (so that exchange continues to run in-house) but I am running in to a couple of issues:

1. Documentation Only Available For 2013

The documentation that exists seems to only exist for exchange 2013:

http://technet.microsoft.com/en-us/library/jj723133(v=exchg.150).aspx

Is there specific documentation for 2010?

2. I have a backup offsite server that stores email if my main exchange server is down

Since our exchange server is hosted in a small office we can have outages from the power going down, the internet going down, or the server simply crashing and burning. Because of this I have a dedicated linux server hosted at a datacenter which is our primary MX server. It simply redirects the mail to our exchange server unless our exchange server isn't available, in which case it holds the mail until the exchange server becomes available again.

Is there specific documentation for EOP for exchange 2010 and how do I continue to have the redundancy provided to me by the Linux server? Or will EOP provide that redundancy for me and I would no longer need the dedicated server?

Thanks in advance for any help.