diff --git a/server/lib/emailer.ts b/server/lib/emailer.ts
index 9c105a575..1b905e510 100644
--- a/server/lib/emailer.ts
+++ b/server/lib/emailer.ts
@@ -46,7 +46,7 @@ class Emailer {
         secure: CONFIG.SMTP.TLS,
         debug: CONFIG.LOG.LEVEL === 'debug',
         logger: bunyanLogger as any,
-        ignoreTLS: isTestInstance(),
+        ignoreTLS: isTestInstance() || CONFIG.SMTP.HOSTNAME === 'localhost' || CONFIG.SMTP.HOSTNAME === '127.0.0.1',
         tls,
         auth
       })