Environment: Central version: v2023.5.1 Client version: v2023.5.0 Server version: v2023.5.0 We've been running our self-hosted ODK Central instance on DigitalOcean for several months without any major issues. Most questions we've had were easily addressed through the official documentation or exi…

Hi Yaw, thanks for your response. I suspected the same and opened a ticket with DO to request the removal of this restriction. The confirmed that a blanket ban had been enabled from 6 March, however our droplet continued to send emails until a few days ago.

504 bad gateway error when creating web user in ODK Central

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yanokwa June 9, 2025, 5:20pm 2

My guess is that DigitalOcean has added an SMTP restriction on your account.