I have the following setup. One server 2008 r2 with data and exchange2010. I use an online backup client to backup the data and exchange. Because backup using wan1 was to slow to keep up to date with all data changes for one day without using the complete bandwith available I ordered another wan2 from another provider. This wan2 is only needed and used for the online backup.
I have a draytek 2820 router with dual wan and all is working but both wan's interfering with each other making my mail not working and server unreachable.
Is there a way to have the online backup traffic running via wan2 and all other traffic (internet, mail, everything) via wan1.