Handle bouncing emails

[Paul Everitt]

Nat and I get a lot of Nagios alerts for emails that are bouncing. Most of the time, this is somebody who should be deactivated (which Nat does by telling HR.) Other times, it's just something weird that needs investigation, likely leading to going on some web-editable blacklist that postoffice looks at.

In general:

- Let's look at this in a sustained way and have some fresh ideas and new software

- Let's shut up Nagios by fixing underling issues

Steps:

- Investigation of the recent WTF-is-going-on cases

- Brainstorm a UI for listing known-bouncing-email addresses, which Nat can get to, and which somehow lets us know when something is added e.g. via Sentry

- Write some new admin features for various parts of this (blacklist management, for example)

[Carlos de la Guardia (cguardia)]

Where can I take a look at the WTF cases you mention?

[Carlos de la Guardia (cguardia)]

At least part of this was fixed by changing the bounce logging from error to warning, so Nagios is not tripped.