It hasn’t, but we want to ensure it doesn’t happen again.
And to be clear “it” isn’t this specific error, but the problem where an email-in will error out while processing and the user has no idea it hasn’t been posted:
It’s possibly easiest if I explain myself through code. Something like this is the feature I want to add:
https://github.com/LeoMcA/discourse/commit/8a77db9225a75083f6b253d3d885b262b0a96f6f
(To be clear, this doesn’t actually implement the feature - templates, test and such still need to be written, and I’m not even sure if it’s the best way of approaching it - but hopefully it serves as a demonstration.)