Phpmailer "Language string failed to load: tls"

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I am not able to send e-mail by Phpmailer 5.1, I used the following class:

<?php
require_once(__DIR__.'/../../PHPMailer/class.phpmailer.php');
require_once(__DIR__.'/../../PHPMailer/class.smtp.php');

class Mailer extends PHPMailer 
{
    public function __construct()
    {
        $this->IsSMTP(true);
        $this->SMTPAuth = true; 
        $this->Host = 'mail.example.com.br'; // Dados fictícios apenas para demonstração
        $this->Port = 465;
        $this->SMTPSecure = 'tls';
        $this->Username = '[email protected]'; // Dados fictícios apenas para demonstração
        $this->Password = 's5njsd12efasc4';

        $this->IsHTML(true);
        $this->CharSet = 'UTF-8';
        $this->From = "[email protected]"; // Dados fictícios apenas para demonstração
        $this->FromName = "Example"; // Dados fictícios apenas para demonstração
    }
}

I’m using it this way:

    $mail = new Mailer;
    $mail->Subject = "Alerta";
    $mail->MsgHTML('teste');
    $mail->AddAddress('[email protected]'); // Dados fictícios apenas para demonstração
    $mail->AddBCC("[email protected]"); // Dados fictícios apenas para demonstração
    $mail->Send();

It always results in: Language string failed to load: tls

I have tested commenting on some lines:

Attempt 1:

// $this->SMTPSecure = 'tls';

Results in: SMTP Error: Could not authenticate.

Attempt 2:

// $this->SMTPAuth = true;
// $this->SMTPSecure = 'tls';

Results in: The following From address failed: ([email protected])

Attempt 3:

// $this->SMTPAuth = true;

Results in: Language string failed to load: tls

Attempt 4:

$this->Port = 25;

Results in: SMTP Error: Could not connect to SMTP host.

I don’t think it influences anything, but just to be clear I’m using local.

If you can help me I’ll be eternally grateful :)

UPDATE 29/04/2020

I also tested with Phpmailer 5.2.16, it turned blank, it is as if I had sent the email, but did not send, as no e-mail came in my e-mail. So I inserted some echo in class errors class.phpmailer.php and found the following mistake:

SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

I upgraded Phpmailer to the latest version (6.1) via composer.json, as per the tips, I activated the debug mode $this->SMTPDebug = SMTP::DEBUG_SERVER;, the result is now being:

2020-04-29 14:09:11 SERVER -> CLIENT:
2020-04-29 14:09:11 CLIENT -> SERVER: EHLO 192.168.100.10
2020-04-29 14:09:11 SERVER -> CLIENT:
2020-04-29 14:09:11 SMTP ERROR: EHLO command failed:
2020-04-29 14:09:11 SMTP NOTICE: EOF caught while checking if connected
2020-04-29 14:09:11 SMTP Error: Could not connect to SMTP host.
2020-04-29 14:09:11 SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
php phpmailer smtp localhost

1 answer

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The solution for Phpmailer 6.1 has been found: I checked if there was any service running on SMTP port 465, and did not return 220 as per tips, so I tried $this->Port = 587; and it worked! :)

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