Request to Allowlist smtp.gmail.com:587 for Our Railway Services

Question

Hi Railway Support Team,

I hope this message finds you well. I'm reaching out on behalf of I4-Matrix regarding an outbound network connectivity issue affecting our deployed services.

**Issue Summary**

Our backend services are unable to establish outbound SMTP connections to Gmail's mail server. All connection attempts are timing out.

\- **SMTP Host:**[smtp.gmail.com](http://smtp.gmail.com)

\- **Port:** 587 (STARTTLS)

\- **Protocol:** TCP

\- **Purpose:** Transactional email delivery (account verification, notifications, password resets)

**What We've Tried**

\- Verified credentials work correctly in a local environment

\- Tested ports 25, 465, and 587 — all timing out from Railway's environment

\- Confirmed the issue is network-level, not application-level

**Request**

Could you please allowlist outbound TCP connections to:

\> [smtp.gmail.com](http://smtp.gmail.com) on port 587

Alternatively, if there is a recommended way to enable outbound SMTP on Railway, or if this requires a specific plan upgrade, please let us know and we'll act accordingly.

Our services are otherwise running healthy — this is the only blocker for our email functionality.

Thank you for your time and support. Please let us know if you need any additional details such as our project ID or service names.

Best regards,

I4-Matrix Team