On Fri, Feb 20, 2026 at 5:01 PM Michael Wise <[email protected]> wrote:
> It’s throttling. > Slow down your deliveries. > The rate limit must be incredibly low, if that's the case. We sent less than 1500 messages to outlook.com mail servers all day on February 20th. If it is a rate limit, then please share where the rate limit is documented, so that I can set the throttle appropriately. I can't keep under a rate limit if I don't know what it is. And if it's a rate limit, why are we getting 500 errors instead of 400? That should be a temporary error.
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