fix: health_check SMTP check when no auth required (#2281)

app/controllers/health_check_controller.rb

@@ -65,9 +65,13 @@ class HealthCheckController < ApplicationController
       smtp.enable_starttls_auto if smtp.respond_to?(:enable_starttls_auto)
     end
 
+    if settings[:authentication].present? && settings[:authentication] != "none"
       smtp.start(settings[:domain]) do |s|
         s.authenticate(settings[:user_name], settings[:password], settings[:authentication])
       end
+    else
+      smtp.start(settings[:domain])
+    end
   rescue => e
     raise "Unable to connect to SMTP Server - #{e}"
   end