On Fri, Feb 20, 2026 at 5:52 PM Michael Wise <[email protected]>
wrote:

>
>
> It’s IP specific, and is dynamically assigned.
>

Then 5xx errors _really_ make no sense.  If a sender can't know in advance
what their rate limit is, how are they supposed to throttle other than to
re-queue and retry later?
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