In what scenarios might creating a non-existent email address within the same domain help resolve email sending issues with phpmailer?

When using PHPMailer to send emails, sometimes the recipient's email server may block emails from being sent if the "From" address does not exist within the same domain. In this case, creating a non-existent email address within the same domain can help resolve the issue by tricking the recipient's email server into accepting the email. 

// Set up PHPMailer
use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require 'vendor/autoload.php';

$mail = new PHPMailer(true);

// Set email parameters
$mail->setFrom('nonexistent@example.com', 'Sender Name');
$mail->addAddress('recipient@example.com', 'Recipient Name');
$mail->Subject = 'Test Email';
$mail->Body = 'This is a test email';

// Send email
if($mail->send()) {
    echo 'Email sent successfully';
} else {
    echo 'Email could not be sent. Mailer Error: ' . $mail->ErrorInfo;
}

Keywords

PHP phpmailer email address domain sending issues

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