What are common issues when using imap_open in PHP to retrieve emails from a V-Server?

Common issues when using imap_open in PHP to retrieve emails from a V-Server include incorrect server settings, authentication problems, and SSL/TLS certificate verification errors. To solve these issues, make sure to double-check the server settings, ensure that the username and password are correct, and enable SSL/TLS support if needed.

$hostname = '{mail.example.com:993/imap/ssl}INBOX';
$username = 'email@example.com';
$password = 'password';

$inbox = imap_open($hostname, $username, $password);

if (!$inbox) {
    die('Cannot connect to mailbox: ' . imap_last_error());
}

// Retrieve emails from the inbox