June 3, 2026 — Webmail slow authentication (Resolved). Slow LDAP responses caused webmail authentication to take up to 8 seconds. Cache warm-up procedures updated to prevent recurrence.\n\nApril 12, 2026 — Image processing degraded (Resolved). A backend queue reached saturation after a spike in image processing jobs. The affected node has been isolated, jobs migrated, and rate limits added. No data loss.