diff --git a/includes/functions.php b/includes/functions.php
index 29aada6..9bd63c8 100644
--- a/includes/functions.php
+++ b/includes/functions.php
@@ -470,12 +470,32 @@ function send_smtp_email($to, $subject, $message) {
         // Inizia TLS se richiesto
         if (SMTP_ENCRYPTION === 'tls') {
             $send("STARTTLS");
-            $read();
+            $response = $read();
             
-            // Usa una versione più compatibile di TLS
-            $crypto_method = STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT | STREAM_CRYPTO_METHOD_TLSv1_3_CLIENT;
-            if (!stream_socket_enable_crypto($smtp, true, $crypto_method)) {
-                error_log("SMTP Error: Impossibile avviare crittografia TLS");
+            // Verifica risposta 220
+            if (strpos($response, '220') !== 0) {
+                error_log("SMTP Error: STARTTLS fallito - " . $response);
+                fclose($smtp);
+                return false;
+            }
+            
+            // Abilita TLS con metodo compatibile (fallback automatico tra TLSv1.2, TLSv1.1, TLSv1.0)
+            $crypto_methods = [
+                STREAM_CRYPTO_METHOD_TLSv1_2_CLIENT,
+                STREAM_CRYPTO_METHOD_TLS_CLIENT,
+                STREAM_CRYPTO_METHOD_SSLv23_CLIENT
+            ];
+            
+            $tls_enabled = false;
+            foreach ($crypto_methods as $method) {
+                if (@stream_socket_enable_crypto($smtp, true, $method)) {
+                    $tls_enabled = true;
+                    break;
+                }
+            }
+            
+            if (!$tls_enabled) {
+                error_log("SMTP Error: Impossibile avviare crittografia TLS con nessun metodo");
                 fclose($smtp);
                 return false;
             }