One recommended way to help secure your Postfix mail server is enabling TLS (Transport Layer Security) for connections to and from Postfix. You can search for more detailed descriptions of exactly how TLS works, but basically it’s a crypotgraphic protocol that allows connections between systems to remain secure. It relies on a key […]
Monthly Archives: September 2011
This is going to be one of those posts that is probably useless to everyone else, but valuable enough to me that I’ll read it over and over. These are the Git commands I use most when working with projects on my GitHub, and with Git repos to which I have read-only access. […]
Git Commands I Like

I shop at the Home Depot. A lot. And, as I do with absolutely every purchase possible, I used to always pay with my American Express Centurion Card (Membership Rewards points + hassle-free purchase protection). And, every time, as I’m sure Home Depot’s company policies dictate, the cashier would ask “Would you […]
Why I’m Canceling my Home Depot Credit Card

I found a great post by Clay Loveless who wrote a PHP script to batch invalidate files files on an Amazon Web Services CloudFront distribution. You rock, Clay. Amazon doesn’t even let us do that (yet?) via the AWS Mangament Console. Until now, when I wanted to manually invalidate a […]
Simple CloudFront Invalidation of a Single File via HTTP
Another quick tidbit I learned when one of my CentOS boxes was slow to connect via SSH. Connection happened quickly when I would connect from a box on the same router, but connecting from my home machine caused a delay of 20-30 seconds each time. The fix was uncommenting this […]
SSH slow to connect? Turn UseDNS off

If you try to access the URL of your favicon.ico directly (http://example.com/favicon.ico) and your browser opens a “Save As” window instead of just displaying it, then your Apache isn’t set up to properly deliver the .ico file type. Add this line to your httpd.conf file: AddType image/x-icon .ico Don’t forget […]
Favicon.ico not loading? Add an AddType
This is one of those blog posts that’s more written for my own benefit to refer to later than for the benefit of the Web-at-large, but if someone else happens to stumble upon it and it helps you out, then cool. 🙂 I had to migrate a Fedora box (the […]