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Published on October 11, 2021
Last modified on October 11, 2021
DKIM Flow Diagram

This Howto is a brief explanation on what DKIM is, and its role in email delivery. Steps through installation, configuration and authentication.

Published on June 7, 2019
Last modified on July 5, 2019
RPMFusion.org

Some Linux users may not be able to find RPMFusions' repos to add to their config. Here is the reason and a solution to this issue.

Published on September 8, 2016
Last modified on July 5, 2019
What is TSIG - Transaction SIGnature?

This article details how to secure a Slave Bind 9.x server, where the Slave is set up to accept zone transfers from the Master Bind 9.x server using TSIG. For context, read my original article "Using TSIG to enable secure Zone Transfers between Bind 9.x servers".

Published on September 8, 2016
Last modified on May 2, 2022
Bind 9.x

This knowledgebase article details the process for disabling IPv6 name resolution through a Bind 9.x server. If you don't have a requirement for IPv6 name resolution in your network, then this is for you.

Published on July 29, 2016
Last modified on August 1, 2018
What is TSIG - Transaction SIGnature?

This knowledgebase article is a short guide to setting up Transaction SIGnatures (TSIG) based transaction security using Bind 9.x . It describes changes to the configuration file as well as what changes are requires for different features, including the process of creating transaction keys and using transaction signatures with