Investigation confirmed all SMTP/IMAP ports working correctly as of 21:00 UTC.
SMTP issue at 20:31 UTC coincided with LoadBalancer IP updates (10.42.1.1 → 178.105.17.239).
External port tests verify correct protocol greetings on all ports.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
Start new 7-day verification window: 2026-07-13 21:07 UTC → 2026-07-20 21:07 UTC
- CEO confirmed Web-UI SMTP and IMAP working
- Restarting verification per Option A (clean 7-day window)
- Baseline status: all services verified working
Co-Authored-By: Paperclip <noreply@paperclip.ing>
- Verified all infrastructure working correctly (SMTP/IMAP/LoadBalancer)
- Identified user SMTP issue as client configuration (port 143 vs 587)
- Documented proposed verification window restart (2026-07-13 to 2026-07-20)
- Original window had 2+ days with broken LoadBalancer (10.42.1.1 vs 178.105.17.239)
Related: DEV-300
Co-Authored-By: Paperclip <noreply@paperclip.ing>
This document establishes operational rules and diagnostic playbooks for
Stalwart stability monitoring and incident response.
Key sections:
- Critical operational rules (repository as single point of truth)
- Requirement to read git history before any investigation
- Current 7-day stability check procedures (DEV-235)
- Known issues and their fixes (k3s networking, commit b0f2acf)
- Diagnostic playbook for SMTP/IMAP/Web-UI issues
- Issue documentation template
- Evidence requirements for verification completion
This ensures all future investigations follow documented procedures and
avoid repeated debugging cycles.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
