Philippe, Looks like the problem lies where you have added the Subject header. You have terminated it with a \n\n and then your From and To headers. You may want to rewrite it as:
server.sendmail(fromaddr, toaddrs, 'Subject:from python\r\n'+msg) Why dont you consider using the email module - http://python.org/doc/2.4/lib/module-email.html ? It is elegant and easy to use. Thank you, --Kartic -- http://mail.python.org/mailman/listinfo/python-list