'/etc/pki/tls/certs/ca-bundle.crt', * 'verify_peer' => true, * 'verify_depth' => 3, * ); * * $imapSslOptions allows more control over the SSL context used * when connecting to the IMAP server over SSL/TLS. See: * http://php.net/manual/context.ssl.php * For example, you can specify a CA file that corresponds * to your server's certificate and make sure that the * server's certificate is validated when connecting: * $imapSslOptions = array( * 'cafile' => '/etc/pki/tls/certs/ca-bundle.crt', * 'verify_peer' => true, * 'verify_depth' => 3, * ); */