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On Wed, Apr 17, 2024 at 02:00 PM, Nivard Ovington wrote:

mx4c51.megamailservers.eu: 452 4.7.1 Your IP address has been temporarily deferred. Please retry this message later. H:GRM

Looks like a simple case of throttling on the receiving end. In essence, their server is saying "we're not ready to handle this right now. Go away for awhile."

Am I correct in saying that this is a problem at the subscribers end?

Yes and no. The main problem is the expectation that emails will always be delivered in real time.?

Groups.io could throttle mail on the sending side, and sometimes does. I doubt that would make your subscriber any happier.?

Regards,
Bruce

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