Hello,

Just a quick heads up that the mailing lists will be migrating back into the Sepia lab on 9/4 at 10am Eastern time.

Aside from no longer needing to pay AWS for the service, additional benefits we’ll see from this migration include:

Upgrade from mailman 3.3.1 to 3.3.10. This version includes a task runner that will automatically clean up stuck list subscriptions. This was the main cause for the Web UI hanging and going down over the past few years.
Postgres DB migration from 9.6 to highly available Crunchy DB based on Postgres 16
Lab-wide SMTP relay
Modern anti-spam stack (postscreen, rspamd)
In-house DKIM signing (mail-tester.com rates us a 8.9/10 score)
Mailing alias (vs. an entire list) support
Proper reverse DNS (helps our spam score)

The migration itself shouldn’t take more than 30 minutes. It’s already been tested and everything that can be staged ahead of time is already ready.

David Galloway

Ceph Engineering Labs – Infrastructure Architect

david.galloway@ibm.com

IBM