Appliance Management
KumoMTA appliance — version, uptime, backups, and updates
Version
3.4.1
KumoMTA CE
Uptime
14d 6h
since Mar 4, 2026
Last Backup
2h ago
backup-20260318-0842
WAL Mode
ON
Write-Ahead Log active
ActiveUpdate Status
Current
v3.4.1 is latest
Up to dateWAL Mode — Write-Ahead Log Active
Every inbound message is written to the WAL before acknowledgment. In the event of a power failure or crash, no messages are lost — the WAL replays on restart to recover exact queue state.
Backup History
| Backup ID | Timestamp | Size | Status | GPG Signed |
|---|---|---|---|---|
| backup-20260318-0842 | Mar 18, 2026 — 08:42 UTC | 1.2 GB | Success | Signed |
| backup-20260317-0841 | Mar 17, 2026 — 08:41 UTC | 1.2 GB | Success | Signed |
| backup-20260316-0840 | Mar 16, 2026 — 08:40 UTC | 1.1 GB | Success | Signed |
| backup-20260315-0839 | Mar 15, 2026 — 08:39 UTC | 1.2 GB | Success | Signed |
| backup-20260314-0838 | Mar 14, 2026 — 08:38 UTC | 1.2 GB | Failed | — |
| backup-20260313-0837 | Mar 13, 2026 — 08:37 UTC | 1.1 GB | Success | Signed |
Restore Drill
Demo PreviewVerify your backups are restorable — run a point-in-time restore to an isolated staging appliance without affecting production.
Update Bundles
Air-gap compatible — signed bundles, no internet required| Bundle Version | Release Date | Status | Size | Apply |
|---|---|---|---|---|
| 3.4.2 | Mar 15, 2026 | Available | 842 MB | |
| 3.4.1 | Mar 4, 2026 | Current | 810 MB | — |
| 3.4.0 | Feb 20, 2026 | Applied | 795 MB | — |
| 3.3.2 | Feb 5, 2026 | Applied | 780 MB | — |
GPG-signed backups
Every backup is cryptographically signed — verify integrity before restore.
WAL mode
Write-Ahead Log ensures zero message loss across crashes and reboots.
Offline air-gap updates
Download signed bundles on a jump server, transfer via USB to air-gapped appliances.
Signed update bundles
Every release is signed with our release key — MITM injection impossible.
Production runbook
Step-by-step operational runbook included with every appliance deployment.
Health self-checks
Startup and periodic self-checks validate WAL, disk, memory, and queue integrity.