Hello rogerroger,
i didnt find or identify any specfic thing. But there are some possible causes.
1.) you have ipv6 active ( obviously with sbs) have you modified your hosts file according to
http://seer.entsupport.symantec.com/docs/306689.htm
2.) i couldnt find it in the log, but disable the Advanced open file option when you backup Exchange,SQL, .... So you need to create a specfic job to create a backup of a vss aware application
3.) NAS: some NAS have problems with very large files, typically are this borders at 2 and 4 GB. Please verifiy it.
4.) try to use the same account for backup the exchange server which you use as system logon account.
It is suggested to use only one account for the whole backup purpose.
5.) backup exchange alone, just to make sure that the problem ist not related to sharepoint.
Regards
PS: meine mutter hat mepla beschläge in Ihrer Küche :)
