1.7 KiB
1.7 KiB
UPDATE.md — Keeping the Mail Server Up to Date
This document describes how to keep the mail server setup up to date:
- docker-mailserver (DMS)
- Snappymail
- Amavis / SpamAssassin
- ClamAV
- Postfix / Dovecot
- TLS via host-level nginx
1. Update Docker Images
Run regularly (e.g. weekly or monthly):
docker pull mailserver/docker-mailserver:12
docker pull ghcr.io/the-djmaze/snappymail:latest
Then restart the stack:
docker compose down
docker compose up -d
2. ClamAV Signature Updates
ClamAV updates automatically via freshclam inside the container.
Check status:
docker exec mailserver freshclam --version
3. SpamAssassin / Amavis Updates
SpamAssassin rules are updated automatically via sa-update.
Verify:
docker exec mailserver sa-update -D
4. Restart After Configuration Changes
If anything under config/ is modified:
docker exec mailserver setup restart
or:
docker compose restart mailserver
5. TLS Certificates
TLS termination is handled by host-level nginx.
ACME renewal is automatic.
No action required inside the mailserver container.
6. Health Check
Run the custom health checker:
./tools/health_check.sh
It verifies DNS, TLS, Postfix, Dovecot, Amavis, ClamAV, and queue status.
7. Full System Upgrade (optional)
On the host:
apt update && apt upgrade
reboot
Docker containers restart automatically.
Summary
- Pull updated images regularly
- Restart after pulling
- ClamAV and SpamAssassin update themselves
- TLS certificates renew automatically
- Use the health checker to verify system status