All articles · Page 6
Internal or External? Interpreting Exchange Hybrid Mail Headers: AuthAs, MessageDirectionality, and X-originatororg
In Exchange hybrid environments, header classification determines whether an email is treated as internal. Which headers carry the classification, how tenant attribution works through certificates and connectors, and how to identify a misrouted message.
Performing a BIOS Update Safely: A Guide Using ASRock AM5 as an Example, Including BitLocker Preparation
The complete BIOS update process using an ASRock AM5 board as an example: determine the version, verify the download using a hash, properly suspend BitLocker, boot into UEFI (even if F2 does nothing), update with Instant Flash, and configure settings sensibly after the update.
VPN Split Tunneling for Microsoft Teams: Routing Media Traffic Around the Tunnel
Teams calls over a VPN suffer from latency, jitter, and the detour through the VPN gateway. This article explains which Microsoft networks and ports handle media traffic, why IP-based split tunneling is superior to app exclusions, and how to implement it in consumer VPNs, WireGuard, OpenVPN, and enterprise clients.
Determining a Mail Server’s Load Profile: Bursts, Peak Rates, and Recipient Structure from Message Tracking
How many emails per minute does your mail server really process, and how high are the peaks? How to use PowerShell and Exchange Message Tracking to determine the real load profile: rates per minute and hour, burst duration, recipient structure, message sizes, and common analysis mistakes.
Claude Desktop keeps crashing: “GPU process gone” with exit code 101457950, cause and solution
The Claude Desktop app on Windows exits completely with “GPU process gone: exitCode 101457950” (0x060C201E), often followed by the Store app repair dialog. The full causal chain: Code Integrity blocks vk_swiftshader.dll, Chromium’s fallback chain runs out, and the built-in intentional crash terminates the app. With a permanent solution (switching to the classic installation without MSIX), self-diagnosis via the event log, and analysis down to the minidump.
Planning email load tests: Tools for 10,000-email bursts under Linux and Windows compared
Anyone migrating a gateway or sizing an email environment needs reliable figures rather than gut feelings. Which tools generate bursts of tens of thousands of emails, what a clean test plan looks like, and how to evaluate the results from logs.
RDP Printer Redirection: Print Through the Local PC Instead of the Remote Computer
Print jobs from the RDP session should go to the printer next to the user, not to the remote computer. The setting is configured in three places: the RDP client, the .rdp file, and the target system. This also covers handling the “Unknown publisher” warning and a troubleshooting checklist.
SMTP Load Testing with Apache JMeter in Practice: 10,000 Emails, Five Rule Paths, One HTML Report
A complete load test from A to Z: a test plan with a message mix along the ruleset paths of an encryption gateway, a portable setup without installation, 10,000 emails in a burst, and analysis using the JMeter HTML report—including the issues that actually occurred.
Reading and Understanding Your Electricity Bill: An EKZ Bill, Line by Line
Energy, grid use, metering, charges: What is really on a Swiss electricity bill, who sets each price, and which line items can be changed—plus an interactive sample bill based on the EKZ model.
Is Joining a LEG Worth It? An Honest Example Calculation
A 20 percent discount on grid usage sounds like money. The calculation based on EKZ’s offering shows that, for electricity consumers only, the LEG under the grid operator model is virtually cost-neutral, while producers fare better. The full calculation with all the numbers.
New Tool: LEG Price Calculator
Calculates in seconds what a local electricity community delivers financially: grid usage discount versus service fee, for consumers and solar producers. Preloaded with EKZ rates for 2026, all values adjustable, runs entirely in the browser.
What Are These LEGs, Anyway? Local Electricity Communities Explained
Since 2026, neighbors have been allowed to sell solar power to one another via the public grid: Local Electricity Communities (LEGs) make it possible. How 15-minute allocation works, what the 20 or 40 percent grid usage discount means, and how LEGs, ZEVs, and vZEVs differ.
