All case studies
Mail infrastructure Edos internal production environment 15 August 2025
Edos's own production mail environment hit a critical upgrade failure where vendor tooling couldn't complete a required security update. Standard escalation paths were exhausted.
Most teams in our position would have rebuilt from scratch. We chose to dig in — diagnosing the root cause, performing the manual remediation work the standard tooling couldn't, and rebuilding our defensive monitoring around the recovered systems.
Vendor tooling couldn't complete the upgrade
A required security update on a production mail platform failed at multiple stages. Standard escalation paths were exhausted. Rebuild was the obvious option — and the wrong one.
Root-cause diagnosis and manual remediation
- Diagnosed the underlying failure across multiple system components
- Performed the manual remediation work vendor tooling couldn't deliver
- Hardened the recovered environment and locked down access
- Built health monitoring and defensive scripts to prevent recurrence
Recovered. Hardened. Monitored.
- Production environment recovered without rebuild
- Zero downtime to mail flow during the cutover
- Ongoing monitoring and defensive scripts in place
The kind of work most engineers walk away from — and exactly the kind we run toward, on our own systems and yours.
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