The REST API returns a 500 when requesting subscriptions for a nonexistent address.

[Stephen A. Goss]

Requests to /<email address hidden>/memberships causes an exception in Mailman so it returns a 500 instead of a 404.

[Stephen A. Goss (postfuturist)]

Here's a simple fix.

[Neil Leathers (neil-leathers-rogers-deactivatedaccount)]

This sounds like a http.bad_request() not http.not_found().

[Stephen A. Goss (postfuturist)]

Possibly, though the request would be valid if someone were to subscribe to a mailing list with that email address, which is why I lean towards 404.

[Barry Warsaw (barry)]

Agreed that for consistency, a 404 is a better error code. Thanks for the patch!