[Evolution] problem to send mail with evolution

[Xinguhill <xinguhill wanadoo fr>]

Hello,

I have a problem with evolution since few days. I don't know why, but I 
can't send mail. It says the following message : Erreur durant 
l'exécution de l'opération :
Erreur lors de la réponse de fin de DATA: Opération demandée non 
effectuée : boîte à lettres non disponible... (... so in english it says 
: Can't execute the operation : error while transfering the end of DATA 
: operation canceled : mailbox don't   available ! ). But I can alwyas 
receive my mail otherwise.

I have reinstall evolution, it has worker for a while, and after three 
or four days, the same bug appears...

Does someone coul help me ??

Thank you very much

Sincerely

Francis Beaubois