diff --git a/backend/config/initializers/match_live_tv.rb b/backend/config/initializers/match_live_tv.rb
index c3c1830..201ab9a 100644
--- a/backend/config/initializers/match_live_tv.rb
+++ b/backend/config/initializers/match_live_tv.rb
@@ -1,3 +1,6 @@
+require "net/smtp"
+require "openssl"
+
 module MatchLiveTv
   class << self
     def jwt_secret
@@ -102,6 +105,7 @@ module MatchLiveTv
     end
 
     # In produzione senza SMTP non blocca il flusso (es. collaudo): la mail si può inviare a mano.
+    # Errori SMTP (dominio invalido, EOF Aruba, porta chiusa) non devono far crashare la request.
     def deliver_mail(mail)
       if Rails.env.production? && !smtp_configured?
         Rails.logger.info("[mail] skip (SMTP assente): #{mail.subject}")
@@ -110,6 +114,9 @@ module MatchLiveTv
 
       mail.deliver_now
       true
+    rescue EOFError, Net::SMTPError, Errno::ECONNREFUSED, Errno::ETIMEDOUT, SocketError, OpenSSL::SSL::SSLError => e
+      Rails.logger.warn("[mail] delivery failed: #{mail.subject} #{e.class}: #{e.message}")
+      false
     end
 
     def privacy_controller_name
diff --git a/backend/spec/requests/account_spec.rb b/backend/spec/requests/account_spec.rb
index 118840c..3b34a9d 100644
--- a/backend/spec/requests/account_spec.rb
+++ b/backend/spec/requests/account_spec.rb
@@ -120,6 +120,17 @@ RSpec.describe "Account API", type: :request do
       expect(user.reload.password_reset_digest).to be_present
     end
 
+    it "non va in 500 se SMTP rifiuta il destinatario" do
+      allow_any_instance_of(ActionMailer::MessageDelivery).to receive(:deliver_now)
+        .and_raise(Net::SMTPFatalError.new("556 5.1.10 invalid destination domain"))
+
+      expect {
+        post "/api/v1/auth/password/forgot", params: { email: user.email }
+      }.not_to raise_error
+      expect(response).to have_http_status(:ok)
+      expect(user.reload.password_reset_digest).to be_present
+    end
+
     it "returns the same message for unknown emails" do
       expect {
         post "/api/v1/auth/password/forgot", params: { email: "nobody@example.com" }