Outlook 2007 not send attachement > 10Mb

Hello, and Merry Chritsmas from Spain to all.

 

When using Outlook 2007, (on my W7 home premium 64bits) , Norton send me some Error messages if I include Files greater than 10 Mb on the same E_mail.

 

The same E_mail send directly by Webmail pages, (less Outlook) are sent, and no error are received.

 

Can be some bad configuration ?