What are common reasons for PHP scripts not sending emails successfully?

Common reasons for PHP scripts not sending emails successfully include incorrect SMTP settings, firewall restrictions blocking outgoing emails, and issues with the email server. To solve this issue, double-check the SMTP settings, ensure that the firewall allows outgoing emails, and verify that the email server is properly configured. 

// Example PHP code snippet with corrected SMTP settings

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

// Set the SMTP settings
ini_set("SMTP", "mail.example.com");
ini_set("smtp_port", "25");

// Send the email
mail($to, $subject, $message);

Keywords

SMTP mail function authentication spam filters error logs

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