Dovecot is a secure, open-source IMAP and POP3 server that works alongside Postfix to deliver email to mail clients. This guide installs and configures Dovecot IMAP on Ubuntu 24.04 LTS. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server Postfix installed and configured A domain name with MX records A user with […]
🟠 High ⏱ 5–30 min Last verified: 25 December 2024 Affected versions: Debian 12 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
🟡 Medium ⏱ 5–30 min Last verified: 25 December 2024 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
🟡 Medium ⏱ 5–30 min Last verified: 25 December 2024 Affected versions: Windows Server 2025 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution — Primary Fix Solution — Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
pgAdmin 4 is the leading open-source web-based management tool for PostgreSQL. This guide installs the pgAdmin 4 web version on Ubuntu 24.04 LTS so you can manage databases from a browser. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server PostgreSQL 16 installed Nginx installed A user with sudo privileges Step 1 […]
How to Configure Network Policy Server (NPS/RADIUS) on Windows Server 2025 Network Policy Server (NPS) is Microsoft’s implementation of the Remote Authentication Dial-In User Service (RADIUS) protocol, built into Windows Server 2025. NPS acts as the central authentication, authorization, and accounting (AAA) broker for network access requests originating from VPN gateways, wireless access points (802.1X), […]
How to Implement Blue-Green Deployment on Windows Server 2025 Blue-green deployment is a release strategy that maintains two identical production environments — Blue (currently live) and Green (the new version being deployed to) — and switches traffic between them atomically. The key benefit is near-zero downtime: the switch is a configuration change that can be […]
🟠 High ⏱ 5–30 min Last verified: 24 December 2024 Affected versions: Ubuntu 22.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
🟠 High ⏱ 5–30 min Last verified: 22 December 2024 Affected versions: CentOS Stream 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]
🟡 Medium ⏱ 5–30 min Last verified: 22 December 2024 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
