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Email Configuration

Overview

SilverLinux uses a centralized SMTP configuration for application email delivery.

Email is used for:

  • Password resets
  • User invitations
  • Notifications
  • System alerts
  • Backup reports
  • Future CI/CD notifications

Sender Address

noreply@silveressence.net

Purpose:

  • Automated emails
  • Application notifications
  • No inbound processing required

SMTP Provider

Provider:

Gmail SMTP

Server:

smtp.gmail.com

Port:

587

Security:

STARTTLS

Authentication:

Login

Secret Storage

SMTP credentials are stored in:

Infisical

Variables:

SMTP_HOST
SMTP_PORT
SMTP_USERNAME
SMTP_PASSWORD

These values must never be committed to Git repositories.


Applications Using Email

OpenProject

Purpose:

  • Password reset emails
  • Work package notifications
  • Mention notifications
  • User invitations

Sender:

noreply@silveressence.net

Status:

Configured


Gitea

Purpose:

  • Password reset emails
  • Repository notifications
  • User invitations

Sender:

noreply@silveressence.net

Status:

Configured


Backup System

Purpose:

  • Backup success emails
  • HTML backup report emails
  • Operational backup notifications

Delivery:

  • Postfix relay through Gmail SMTP
  • Gmail App Password authentication
  • TLS encryption

Status:

Configured and validated


Nextcloud

Purpose:

  • User notifications
  • File sharing notifications
  • Password and account emails where enabled

Sender:

noreply@silveressence.net

Observed runtime settings:

smtp.gmail.com
port 465
ssl

Status:

Configured


Alertmanager

Purpose:

  • Monitoring alert emails
  • Incident grouped notifications
  • Severity-based alert routing

Recipients:

  • oclick021@gmail.com
  • martin@silversolutions.nl

Status:

Configured and validated


Future Applications

Future services should use the centralized SMTP configuration whenever possible.

Examples:

  • BaGet
  • CI/CD notifications
  • Alerting systems

Testing

OpenProject

Test by:

  1. Creating a user.
  2. Triggering a password reset.
  3. Verifying email delivery.

Gitea

Test by:

  1. Opening "Forgot Password".
  2. Requesting a password reset.
  3. Verifying email delivery.

Troubleshooting

OpenProject

View logs:

docker logs openproject

Gitea

View logs:

docker logs gitea

Gmail Authentication

Verify:

  • App password is valid
  • SMTP credentials match the Infisical values injected by slcompose
  • STARTTLS is enabled
  • Port 587 is used

Backup Reports

Verify:

  • Postfix relay is active
  • Gmail App Password authentication succeeds
  • TLS delivery succeeds
  • Backup wrapper sends the HTML report after backup completion

Security Notes

  • Use Gmail App Passwords.
  • Never use personal Gmail passwords.
  • Store SMTP credentials only in Infisical.
  • Rotate credentials if they become exposed.

  • docs/secrets.md
  • docs/security.md
  • docs/backups.md
  • docs/monitoring.md
  • openproject/README.md
  • gitea/README.md