Hello Railway Support Team,

I am running a Django backend application deployed on Railway (Singapore region) and I am facing an issue with outbound SMTP connectivity.

We are using Gmail SMTP for sending OTP emails.

Configuration:

SMTP Host: smtp.gmail.com

Port: 465 (SSL)

Framework: Django (Python)

Deployment: Railway (Singapore region)

Issue:

When the application tries to send emails from Railway, the SMTP connection fails at the network level before authentication.

Error received:

OSError: [Errno 101] Network is unreachable

What we tested:

HTTPS outbound connectivity works:

https://google.com returns 200 OK

Basic TCP connectivity works:

Connection to 8.8.8.8:53 succeeds

SMTP connection fails only on Railway:

smtp.gmail.com:465 fails with network unreachable error

Same SMTP code works correctly on local environment without any issues.

Conclusion:

The issue appears to be specific to outbound SMTP traffic from Railway to Gmail SMTP servers. Everything else (DNS, HTTPS, TCP) is working normally.

Request:

Could you please confirm:

Whether outbound SMTP connections (port 465/587) are restricted on Railway

If there are any network/firewall policies affecting SMTP traffic in the Singapore region

Any recommended workaround for using Gmail SMTP from Railway

This issue is blocking production OTP email functionality for our application.

Thank you.