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  1. #1
    iamjuan is offline Member
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    Smile Problems sending SMTP SSL with exchange, port 25

    I've some troubles sending to my Microsoft Exchange 25 SSL port (it has the same port for SSL and non SSL communications), with javaMail API:

    this._properties = new Properties();
    this._properties.put("mail.smtp.host", myHost);
    this._properties.put("mail.smtp.port", "25");
    this._properties.put("mail.smtp.auth", "true");
    this._properties.put("mail.smtp.ssl.enable", "true");
    this._properties.put("mail.smtp.starttls.enable"," true");
    this._properties.put("mail.debug", "true");
    this._properties.put("mail.from", "myDir@myDomaincom");
    this._properties.put("mail.smtp.auth.mechanisms", "LOGIN");
    this._properties.put("mail.transport.protocol","sm tps");
    this._properties.put("mail.smtp.socketFactory.clas s", "javax.net.ssl.SSLSocketFactory");
    this._properties.put("mail.smtp.socketFactory.fall back", "false");

    System.setProperty("javax.net.debug", "ssl");

    this._autentificadorSMTP = new AutenticacionSMTP(emailuser, emailPass);
    this._session = Session.getInstance(this._properties, this._autentificadorSMTP);
    this._email = createContent());
    Transport.send(this._email);

    The server returns an answer that cannot parse the javaMail API:

    javax.net.ssl.SSLException: Unrecognized SSL message, plaintext connection?


    I've tried some combinations of properties but still gets the same error. I've validated that 465 or 587 ports doesnt work. The same code works fine for GMAIL 465 port.

    Any idea? Thanks

  2. #2
    Steve11235's Avatar
    Steve11235 is offline Senior Member
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    Dec 2008
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    Default

    Given that you are using a MS product, I would try an application that you have high confidence will work, like Outlook. Right now, you don't know that Exchange is working correctly.

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