Debug your Render services in Claude Code and Cursor.
Try Render MCPSeptember 16, 2025
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Free web services will no longer allow outbound traffic to SMTP ports
Starting next week, free Render web services will block outbound network traffic to SMTP ports 25, 465, and 587.
This change will be live across all regions by Friday, September 26th.
To continue sending traffic to an SMTP port, you can upgrade your free web service to any paid instance type.
Learn more about free service limitations in the documentation.