[horde] problem sync with windows live mail

[caronint]

Hi everybody

Can anybody help me with this simple task ?
I am using windows live mail, so I send and receive my emails from windows 
live mail.
However the mails I send, do not appear in the sent items in Horde, and 
likewise the mails I send from Horde do not appear in the sent items of 
Windows Live mail. How can I change this and make sure the mails I send from 
either one appear in both 'sent items' folders ?
With the other email addresses (gmail and hotmail) I use on windows live 
mail,  this problem does not occur.

Thanks for your help

Pat