***** Below steps will not work till the morning of 12/6/2021
The mailman system (mailman.cchmc.org) which provides mail lists for CCHMC has been upgrade to Mailman version3.
The old mailman system was version 2 which is no longer being supported or security patched. The system was migrated to Mailman 3 on 12/6/2021
How to access mailman 3
Mailman 3 has a whole new interface and more importantly, there is no longer a shared password to mange each list. If you are a list admin you need to to setup an account on the mailman 3 system to access any lists that you admin.