Intermittent outbound SMTP connectivity issue (Errno 101: Network is unreachable) from Railway web service

Question

Hello Railway Support Team,

I am experiencing intermittent outbound network issues from my Railway service when sending emails via SMTP.

**Project/Environment/Service**

* Project: `melodious-hope`
* Environment: `production`
* Service: `web`
* Deployment ID (example where error occurred): `e3648a95-d2ec-4c5f-ac5f-a6297dc9e5bb`

**Issue** Our Django app fails to connect to Gmail SMTP from the running container with:

`OSError: [Errno 101] Network is unreachable`

This happens in production during a password reset email flow.

**Relevant traceback/log timestamp**

* Timestamp: `2026-04-27T02:15:41Z`
* Stack points to Python `smtplib.connect()` and Django SMTP backend:  
   * `django/core/mail/backends/smtp.py`, line 128  
   * `smtplib.py`, line 341 (`connect`)  
   * `smtplib.py`, line 312 (`_get_socket`)

**SMTP target**

* Host: `smtp.gmail.com`
* Port: `587`
* TLS: `STARTTLS`

**Important context**

* App SMTP environment variables are correctly loaded in runtime (`EMAIL_HOST`, `EMAIL_PORT`, `EMAIL_USE_TLS`, `EMAIL_HOST_USER`, `EMAIL_HOST_PASSWORD`).
* A manual test via `railway run` succeeded at least once (`send_mail` returned success), but production requests still intermittently fail with `Errno 101`.

Could you please check whether there is any egress/network restriction or instability from this service/replica to `smtp.gmail.com:587`?

If needed, I can provide full CSV logs and exact request times.

Thank you!