fix: Avoid send PEC when application are not under NAT

app/src/main/resources/config/core-config.properties

@@ -4,7 +4,7 @@ mscore.logoPath = ${PAGOPA_LOGO_URL:resources/logo.png}
 mscore.infoCamereEnable = ${INFOCAMERE_ENABLE:false}
 mscore.sender-mail = ${MAIL_SENDER_ADDRESS:test@test.it}
 mscore.destination-mails = ${DESTINATION_MAILS:}
-
+mscore.enableSendDelegationMail=${SEND_DELEGATION_PEC:false}
 mscore.sendEmailToInstitution = ${ONBOARDING_SEND_EMAIL_TO_INSTITUTION:false}
 mscore.institutionAlternativeEmail = ${ONBOARDING_INSTITUTION_ALTERNATIVE_EMAIL}
 mscore.onboarding-expiring-date = ${ONBOARDING_EXPIRING_DATE:60}

connector-api/src/main/java/it/pagopa/selfcare/mscore/config/CoreConfig.java

@@ -22,4 +22,5 @@ public class CoreConfig {
     private boolean sendEmailToInstitution;
     private Integer onboardingExpiringDate;
     private boolean infoCamereEnable;
+    private boolean enableSendDelegationMail;
 }

core/src/main/java/it/pagopa/selfcare/mscore/core/MailNotificationServiceImpl.java

@@ -47,10 +47,12 @@ public void sendMailForDelegation(String institutionName, String productId, Stri
             userNotificationService.sendDelegationUserNotification(userDestinationMail, mailParametersMapper.getDelegationUserNotificationPath(), product.getTitle(), mailParameters);
             log.info("create-delegation-user-email-notification :: Email successful sent");
 
-            List<String> institutionDestinationMail = getDestinationMails(partnerInstitution);
-            log.info(DESTINATION_MAIL_LOG, institutionDestinationMail);
-            emailConnector.sendMail(mailParametersMapper.getDelegationNotificationPath(), institutionDestinationMail, null, product.getTitle(), mailParameters, null);
-            log.info("create-delegation-institution-email-notification :: Email successful sent");
+            if (coreConfig.isEnableSendDelegationMail()) {
+                List<String> institutionDestinationMail = getDestinationMails(partnerInstitution);
+                log.info(DESTINATION_MAIL_LOG, institutionDestinationMail);
+                emailConnector.sendMail(mailParametersMapper.getDelegationNotificationPath(), institutionDestinationMail, null, product.getTitle(), mailParameters, null);
+                log.info("create-delegation-institution-email-notification :: Email successful sent");
+            }
         } catch (Exception e) {
             log.error("create-delegation-email-notification :: Impossible to send email. Error: {}", e.getMessage(), e);
         }

core/src/test/java/it/pagopa/selfcare/mscore/core/MailNotificationServiceImplTest.java

@@ -90,6 +90,7 @@ void sendNotificationDelegationMail() {
         when(institutionConnector.findById(anyString())).thenReturn(institution);
         when(userApiConnector.getUserEmails(institution.getId(), product.getId())).thenReturn(userEmails);
         when(coreConfig.isSendEmailToInstitution()).thenReturn(true);
+        when(coreConfig.isEnableSendDelegationMail()).thenReturn(true);
         Assertions.assertDoesNotThrow(() -> notificationService.sendMailForDelegation("institutionName", "productId", "partnerId"));
     }