1. Cloud

    Cloud Systems

    A cloud used to be floating in the sky, then it was a bubbly thing on a network diagram where weird things happen. Now a cloud just means "Somebody else's computer.". Of course you get to it over a network and can share things, like files (pictures, music …

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  2. DNS

    Published: Wed 25 January 2023
    Updated: Fri 19 April 2024
    By Don Cohoon

    In linux.

    tags: web

    Domain Name Service (DNS)

    A Domain Name Service (DNS) allows your E-Mail and Web Server to use a name instead of an IP Address, so other people can find you by name. Some Internet Service Providers (ISP) will change your IP address every few months in a residential environment.


    Table …
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  3. E-MailRelay

    E-Mail Relay

    The following diagrams are what this document will accomplish. The challenge is to obtain and keep a good reputation that other E-Mail handlers around the world will accept. Otherwise your messages will be dumped in the trash can (SPAM) or sent back to you (bounced).


    Table of Contents …
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  4. MirrorDisks

    Mirror Disks

    Mirroring disks on Linux is simple and prudent to ensure your data survives hardware, software and human failures. All data from one disk is duplicated on another disk and if any one disk fails, you will never know it. So it is important after setting up to monitor …

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