What are some common reasons for the PHPMailer SMTP connect() failed error message?

The PHPMailer SMTP connect() failed error message commonly occurs when there is an issue with the SMTP connection settings in the PHP code. This could be due to incorrect SMTP host, port, username, password, or security settings. To solve this issue, double-check the SMTP settings in your PHP code to ensure they are correct. 

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

try {
    $mail->isSMTP();
    $mail->Host = 'smtp.example.com';
    $mail->Port = 587;
    $mail->SMTPAuth = true;
    $mail->Username = 'your_email@example.com';
    $mail->Password = 'your_password';
    $mail->SMTPSecure = 'tls';

    $mail->setFrom('your_email@example.com', 'Your Name');
    $mail->addAddress('recipient@example.com', 'Recipient Name');

    $mail->isHTML(true);
    $mail->Subject = 'Subject';
    $mail->Body = 'Message body';

    $mail->send();
    echo 'Email sent successfully';
} catch (Exception $e) {
    echo 'Message could not be sent. Mailer Error: ' . $mail->ErrorInfo;
}

Keywords

PHPMailer SMTP connect() error message troubleshooting

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