[Koha] Automatic Email sending with Koha

Hi everybody, I have a problem with my Koha server (2.2.8) on a Linux Debian. The server doesn't want to send automatic emails to the borrower. It's strange because the server can send email with the command line. The postfix configuration is OK. Have you any idea? Thanks Regards -- LAFONT Cyril Communauté d'agglomération dracenoise Computer departement manager