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  • Getting to know RPM

    This will be a brief, no frills, overview of RPM and what it is. There will be a few examples, followed by scenarios with issues you may come across frequently. This should be a sufficient introduction to get you comfortable with rpm. Note this will not include installing and uninstalling...

  • Configure and Secure A Minimal CentOS 7 Install

    This is a quick reference text based guide in place of the video I created on my youtube here. I won’t go over as many of the details, this is more if you want the information quick and dirty without all the long winded talking. If you do have questions...

  • spf=neutral google neither permitted nor denied email header error

    I have been using a free tier slack instance for our family. Once we started running out of space, I started migrating to Rocket.Chat. As part of this I had to set up an email server, which gave me a bit of trouble. When sending an email I would get...