Commons Net
  1. Commons Net
  2. NET-421

Problem connecting to TLS/SSL SMTP server using explicit mode

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Critical Critical
    • Resolution: Fixed
    • Affects Version/s: 3.0, 3.0.1
    • Fix Version/s: 3.1
    • Component/s: SMTP
    • Labels:
      None

      Description

      Just tried to send an email through gmail servers by doing the following:

      AuthenticatingSMTPClient client = new AuthenticatingSMTPClient();
      client.connect("smtp.gmail.com", 587); // reply: 220 220 mx.google.com ESMTP
      client.login(); // reply: 250 250 mx.google.com at your service
      client.execTLS(); // reply: 220 2.0.0 Ready to start TLS
      client.auth(AUTH_METHOD.PLAIN, username, password); // exception
      ...

      Unfortunality after execTLS() I get a MalformedServerReplyException. I looked at the SMTPSClient source code and found out that the reader/writer are wrong after execTLS() got called. The performSSLNegotiation() method sets input and output to the new input/output streams from SSLSocket, but the reader/writer are still pointing to the values set inside connectAction().

      Possible fix for this issue:

      public boolean execTLS() throws SSLException, IOException
      {
      	if (!SMTPReply.isPositiveCompletion(sendCommand("STARTTLS")))
      	{
      		return false;
      		//throw new SSLException(getReplyString());
      	}
      	performSSLNegotiation();
      	_reader = new CRLFLineReader(new InputStreamReader(_input_, encoding));
          	_writer = new BufferedWriter(new OutputStreamWriter(_output_, encoding));
      	return true;
      }

        Activity

          People

          • Assignee:
            Unassigned
            Reporter:
            Oliver Saggau
          • Votes:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development