4 ms·
Email sender here (on behalf of about 2.5 million domains). We noticed the issue and mitigated it by transforming the 5xx error into a 4xx error so that message
by ttul 6y ago
Email sender here (on behalf of about 2.5 million domains). We noticed the issue and mitigated it by transforming the 5xx error into a 4xx error so that messages to Google are re-queues instead of being permfailed. But even with this intervention, the ticket volume was insane...