Error:A single valid email address is required to identify the sender of the notification

Hi There,

I have been tried to configure email notification, but no matter what I place in the server email field I get error "A single valid email address is required to identify the sender of the notification".

Which format I must set to this works ?

I dont have Exchange or any email server in house, so I have used a ISP service (smtp.shoopingabc.com.br) it´s working fine, but not on BackupExec notification.

Thanks for any help