Interesting that since moving to a new ISP my login times to a particular Linux server is 20-30 seconds. I figured it had to do with reverse DNS somehow. Sure enough….
That made the logins quick again and that makes me HAPPY!
Did this help you out? It took me a few days to piece together all this information together, I hope this saves you some time (who knows, maybe the future me will be thankful I wrote this down). Let me know your thoughts. email@example.com