ECONNRESET with STARTTLS on port 587

[markuszohner]

Description

Ghosler fails to send test emails via SMTP with STARTTLS (port 587), returning ECONNRESET: read ECONNRESET.

Environment

• Ghosler version: 0.98.4
• Server: Ubuntu 24.04 on Hetzner VPS
• SMTP Provider: Scaleway TEM

SMTP Configuration

• Host: smtp.tem.scaleway.com
• Port: 587
• Secure: false (for STARTTLS)

Steps to Reproduce

1. Configure mail settings with port 587 and secure: false
2. Click "Test Mail" button in Settings

Expected

Email sends successfully

Actual

Error: ECONNRESET: read ECONNRESET

Evidence

The same SMTP settings work perfectly via curl from the same server:

curl -v --ssl-reqd --url 'smtp://smtp.tem.scaleway.com:587'
--mail-from 'test@domain.com'
--mail-rcpt 'recipient@domain.com'
--user 'username:password'
-T - <<< 'Test'

Result: 250 2.0.0 OK: queued

Possible Fix

Nodemailer may need requireTLS: true or different TLS options for STARTTLS connections on port 587.