What are potential solutions for resolving PHP email sending errors like "The following recipients failed"?

When encountering PHP email sending errors like "The following recipients failed," it is likely due to incorrect email addresses or server configuration issues. To resolve this, ensure that the recipient email addresses are valid and properly formatted. Additionally, check if the SMTP server settings are correctly configured in your PHP script. 

// Example PHP code snippet to fix email sending errors

$to = "recipient@example.com";
$subject = "Test Email";
$message = "This is a test email message.";

$headers = "From: sender@example.com\r\n";
$headers .= "Reply-To: sender@example.com\r\n";

if (mail($to, $subject, $message, $headers)) {
    echo "Email sent successfully!";
} else {
    echo "Failed to send email. Please check recipient email address and server configuration.";
}

Keywords

PHP email sending error handling SMTP mail function

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