What are common issues that can cause PHP email scripts to stop working, such as changes in SMTP servers?

One common issue that can cause PHP email scripts to stop working is changes in SMTP servers. If the SMTP server settings in the script do not match the new server settings, emails will fail to send. To solve this issue, update the SMTP server settings in the PHP script to match the new server settings. 

// Update SMTP server settings
$smtpServer = 'new.smtp.server';
$smtpUsername = 'username';
$smtpPassword = 'password';
$smtpPort = 587;

// Create a new PHPMailer instance
$mail = new PHPMailer(true);
$mail->isSMTP();
$mail->Host = $smtpServer;
$mail->SMTPAuth = true;
$mail->Username = $smtpUsername;
$mail->Password = $smtpPassword;
$mail->SMTPSecure = 'tls';
$mail->Port = $smtpPort;

Keywords

PHP email scripts SMTP servers troubleshooting errors

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