Este es el log de errores:
DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: useEhlo true, useAuth true
DEBUG SMTP: trying to connect to host "192.168.1.50", port 25
220 ex2007lz.hfp.es Microsoft ESMTP MAIL Service ready at Thu, 30 Jul 2009 10:08:27 +0200
DEBUG SMTP: connected to host "192.168.1.50", port: 25
EHLO curso5
250-ex2007lz.hfp.es Hello [192.168.13.84]
250-SIZE 61685760
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-STARTTLS
250-AUTH
250-8BITMIME
250-BINARYMIME
250-CHUNKING
250 XEXCH50
DEBUG SMTP: Found extension "SIZE", arg "61685760"
DEBUG SMTP: Found extension "PIPELINING", arg ""
DEBUG SMTP: Found extension "DSN", arg ""
DEBUG SMTP: Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP: Found extension "STARTTLS", arg ""
DEBUG SMTP: Found extension "AUTH", arg ""
DEBUG SMTP: Found extension "8BITMIME", arg ""
DEBUG SMTP: Found extension "BINARYMIME", arg ""
DEBUG SMTP: Found extension "CHUNKING", arg ""
DEBUG SMTP: Found extension "XEXCH50", arg ""
DEBUG SMTP: Attempt to authenticate
DEBUG SMTP: use8bit false
MAIL FROM:<AR-30/07/2009>
501 5.1.7 Invalid address
QUIT
Ha ocurrido una excepcion: javax.mail.SendFailedException: Sending failed;
nested exception is:
class javax.mail.MessagingException: 501 5.1.7 Invalid address