Actually, DMARC works fine with mailing lists
...as long as DKIM is enabled| begriffs.com
Download the eBook ($12) For software developers, the world of hardware and firmware can be an exciting change. Firmware catapults your logic into the physical world. Rather than moving text between forms and a database, you can move motors. Rather than listening for an API call, you can listen for SONAR or GPS signals. This is the guide I wish I had when first starting embedded development. It cultivates professional embedded programming habits from the start. We’ll skip the beginner ecosy...| begriffs.com
GDB is an old and ubiquitous debugger for Linux and BSD systems that has extensive language, processor, and binary format support. Its interface is a little cryptic, but learning GDB pays off. This article is a set of miscellaneous configuration and scripting tricks that illustrate reusable principles. It assumes you’re familiar with the basics of debugging, like breakpoints, stepping, inspecting variables, etc. Table of contents GDB front endsFixing DDD freeze on startup Honoring gdbinit c...| begriffs.com
Although parsing is often described from the perspective of writing a compiler, there are many common smaller tasks where it’s useful. Reading file formats, talking over the network, creating shells, and analyzing source code are all easier using a robust parser. By taking time to learn general-purpose parsing tools, you can go beyond fragile homemade solutions, and inflexible third-party libraries. We’ll cover Lex and Yacc in this guide because they are mature and portable. We’ll also ...| begriffs.com
In this article we’ll learn how to build shared libraries and install them properly on several platforms. For guidance, we’ll examine the goals and history of dynamic linking on UNIX-based operating systems. Content for the article comes from researching how to create a shared library, wading through sloppy conventions that people recommend online, and testing on multiple Unix-like systems. Hopefully it can set the record straight and help improve the quality of open source libraries. The...| begriffs.com
After several years’ involvement with quickly evolving programming languages, I’ve come to appreciate stability. I’d like to make my programs easy to build on a wide variety of systems with minimal adjustment. I’d like them to keep working long into the future as environments change. To think about stability more clearly, let’s divide a functioning program into its layers. Then we can examine development choices one layer at a time. concentric circles of program resourcesThe more fe...| begriffs.com
The goal I want to create emails that look their best in all mail clients, whether graphical or text based. Ideally I’d write a message in a simple format like Markdown, and generate the final email from the input file. Additionally, I’d like to be able to include fenced code snippets in the message, and make them available as attachments. Demo I created a utility called mimedown that reads markdown through stdin and prints multipart MIME to stdout. Let’s see it in action. Here’s an e...| begriffs.com
LibreSSL is a fork of OpenSSL that improves code quality and security. It was originally developed for OpenBSD, but has since been ported to several platforms (Linux, *BSD, HP-UX, Solaris, macOS, AIX, Windows) and is now the default TLS provider for some of them. When debugging a program that uses LibreSSL, it can be useful to see decrypted network traffic. Wireshark can decrypt TLS if you provide the secret session key, however the session key is difficult to obtain. It is different from the...| begriffs.com
Mention concurrency and you’re bound to get two kinds of unsolicited advice: first that it’s a nightmarish problem which will melt your brain, and second that there’s a magical programming language or niche paradigm which will make all your problems disappear. We won’t run to either extreme here. Instead we’ll cover the production workhorses for concurrent software – threading and locking – and learn about them through a series of interesting programs. By the end of this article...| begriffs.com
This article is based on historical research and on simply reading the Vim user manual cover to cover. Hopefully these notes will help you (re?)discover core functionality of the editor, so you can abandon pre-packaged vimrc files and use plugins more thoughtfully. physical booksTo go beyond the topics in this blog post, I’d recommend getting a paper copy of the manual and a good pocket reference. I couldn’t find any hard copy of the official Vim manual, and ended up printing this PDF usi...| begriffs.com
The design of Unicode illustrated with the ICU4C API| begriffs.com
Database concurrency problems and how to fix them| begriffs.com
