there are no errors but the message never is delivery.

DEBUG: getProvider() returning javax.mail.Provider[TRANSPORT,smtp,com.sun.mail.smtp.SMTPTransport,Sun Microsystems, Inc]
DEBUG SMTP: useEhlo true, useAuth true

DEBUG: SMTPTransport trying to connect to host "172.19.0.186", port 25

DEBUG SMTP RCVD: 220 arexcprd01.e3g.pt Microsoft ESMTP MAIL Service, Version: 5.0.2195.3779 ready at Thu, 3 Jan 2002 16:19:10 +0000

DEBUG: SMTPTransport connected to host "172.19.0.186", port: 25

DEBUG SMTP SENT: EHLO p0217
DEBUG SMTP RCVD: 250-arexcprd01.e3g.pt Hello [172.19.1.196]
250-AUTH GSSAPI NTLM LOGIN
250-AUTH=LOGIN
250-TURN
250-ATRN
250-SIZE 2097152
250-ETRN
250-PIPELINING
250-DSN
250-ENHANCEDSTATUSCODES
250-8bitmime
250-BINARYMIME
250-CHUNKING
250-VRFY
250 OK

DEBUG SMTP Found extension "AUTH", arg "GSSAPI NTLM LOGIN"
DEBUG SMTP Found extension "AUTH=LOGIN", arg ""
DEBUG SMTP Found extension "TURN", arg ""
DEBUG SMTP Found extension "ATRN", arg ""
DEBUG SMTP Found extension "SIZE", arg "2097152"
DEBUG SMTP Found extension "ETRN", arg ""
DEBUG SMTP Found extension "PIPELINING", arg ""
DEBUG SMTP Found extension "DSN", arg ""
DEBUG SMTP Found extension "ENHANCEDSTATUSCODES", arg ""
DEBUG SMTP Found extension "8bitmime", arg ""
DEBUG SMTP Found extension "BINARYMIME", arg ""
DEBUG SMTP Found extension "CHUNKING", arg ""
DEBUG SMTP Found extension "VRFY", arg ""
DEBUG SMTP Found extension "OK", arg ""
DEBUG SMTP: Attempt to authenticate
DEBUG SMTP SENT: AUTH LOGIN
DEBUG SMTP RCVD: 334 VXNlcm5hbWU6

DEBUG SMTP SENT: RTNHL3BkdWFydGUvcGR1YXJ0ZQ==
DEBUG SMTP RCVD: 334 UGFzc3dvcmQ6

DEBUG SMTP SENT: TGNkIDAwaA==
DEBUG SMTP RCVD: 235 2.7.0 Authentication successful

DEBUG SMTP: use8bit false
DEBUG SMTP SENT: MAIL FROM:
DEBUG SMTP RCVD: 250 2.1.0 pedro.lcd@oni.pt....Sender OK

DEBUG SMTP SENT: RCPT TO:
DEBUG SMTP RCVD: 250 2.1.5 pedro.lcd@oni.pt

Verified Addresses
pedro.lcd@oni.pt
DEBUG SMTP SENT: DATA
DEBUG SMTP RCVD: 354 Start mail input; end with .

DEBUG SMTP SENT:
.
DEBUG SMTP RCVD: 250 2.6.0 <4337374.1010074754437.JavaMail.pduarte@p0217> Queued mail for delivery

DEBUG SMTP SENT: QUIT