--- email-helpers.js	1985-10-26 09:15:00.000000000 +0100
+++ email-helpers.js	2023-02-23 10:36:47.218000000 +0100
@@ -81,6 +81,10 @@
       auth: {
         user: smtpusername,
         pass: smtppassword,
+      },
+      tls: {
+      // do not fail on invalid certs
+        rejectUnauthorized: false
       }
     });
   }