As you may or may not know, I’m a bit crazy when it comes to DNS, it’s something that’s is conceptually easy, very complex, and there’s something new EVERY DAY. So why is i t a bad idea to test your dns records immediately after publishing them, or before adding them, or any of that? Let’s start by checking your Continue reading Why it’s a bad idea to test your dns records right away.
A few weeks ago I had the honor of being a guest on a podcast! This is a first for me as the closest to speaking publicly have been at small, 20’sh tech meetups, not the same. I tell you what these guys are really good at their job, they did a ton of research, had great questions (many of Continue reading Datanauts Podcast Episode 081 – Secure Email Infrastructure
So if you were to connect to www.jacobdevans.com via IPv6 you likely also have IPv4 connectivity, or if you connect via IPv4 you may or may not have IPv6. But what about IPv6 ONLY Clients, can you load the site? Well Yes Actually, you can load ths site via IPv6 only, but here’s what you’ll lose. Serverfault.com: at the right Continue reading IPv6 Only (Lonely)
So after a long debate I’ve decided to drop cloud-flare in lieu of HTTP/2 support. A few months ago I added Lets-encrypt my (3) MX Servers, https://jersey.jacobdevans.com for example, which means I also added Mutual-TLS Email support (yay security and encryption). Since that was going so well I decided to go with nginx as an SSL proxy and keep apache Continue reading SSL Everything
Thank you for using my Anycast 301-www, all this IP Does is redirect users to here (if you enter the naked IP) or to the www.$domain of your domain. Why you ask? Because 3rd party CDN’s and other hosting companies want you to point your domain to a CNAME, you can’t CNAME your root domain (https://tools.ietf.org/html/rfc2181#section-10). So you can now Continue reading Anycast-301
Hey Random Readers, if you found this you’re trying to establish reverse dns or PTR Records with your ISP, GREAT! Here’s the email addresses for Comcast and Verizon, if you have some you would like to contribute to this list please feel free to email me via the contact-us page. Verizon DSL and Fios – business-support[at]verizonbusiness[dot]com Comcast Cable – CHQ–Enterprise_Technical_Support[at]cable[dot]comcast[dot]com