This is a brief post which details how to fix an issue with your Synology NAS when it all of a sudden loses it's existing Active Directory domain membership. Even if you try to rejoin the domain, you will get the dreaded error: "Failed to join the windows domain..." Fear not my fine friends, after…
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About: Matrix7
Recent Posts by Matrix7
Synology NAS Loses Domain Connection
Using TCP Wrapper in CentOS 7 for SSH Blocking

Just a brief post today to show you how to use the TCP Wrapper in CentOS to help manage access to SSH. What is a TCP Wrapper? It's a method of blocking access to services on your CentOS server via IP restriction. As a side note, you should still always have a firewall configured, so…
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Install Let’s Encrypt on CentOS 7

Today I'm going to show you how to install Let's Encrypt on CentOS 7. Before we begin I am assuming you have CentOS fully patched, have the EPEL Repository installed, have installed and configured Apache and that Apache is running. You also will need to ensure that you have allowed HTTP and HTTPS traffic through…
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Can’t Remove Exchange 2010 Auto Mapped User Shared Mailbox from Outlook
Just a quick post in the hope this saves someone the time I spent today trying to resolve this issue. I came across a problem today with a user support request where they had Full Access permission to another users mailbox and trying to remove that mailbox after the Full Access was revoked. The other…
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