System Administration


Deprecated: preg_replace(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /var/www/wordpress/wp-includes/kses.php on line 1805

Debugging and Tracing In Postfix

Turn up logging for individual clients A really nice feature Postfix has is this ability to debug individually-specified hosts and this is how you do that.  Just add this to your main.cf: # Debug individually-specified hosts debug_peer_level=3 debug_peer_list=regexp:/etc/postfix/debug_peers In this case I have set the debug level to 3.  The default level is 2.  Also

Debugging and Tracing In Postfix Read More »

Postfix Mail Server Install, Configure & Forward to Gmail

Video Description The Postfix Mail Server (aka Mail Transfer Agent (MTA)) is installed, configured and set up to forward emails to a private email (Gmail in this case, but could be any external SMTP server) on a fresh Debian 9 system. The Blog Variant Installation We’ll start by opening a terminal from an non-root account

Postfix Mail Server Install, Configure & Forward to Gmail Read More »

3 Ways of Motherboard Identification in Windows

My personal favorite, the command-line.  Type “cmd” into your Windows search (or use your shortcut!): Then issue the wmic command like so: Microsoft Windows [Version 10.0.14393] (c) 2016 Microsoft Corporation. All rights reserved. c:\>wmic baseboard get product,Manufacturer,version,serialnumber,Model,Name Manufacturer Model Name Product SerialNumber Version Intel Corporation Base Board DH77EB BQEB219007QS AAG39073-304 A good option I’ve used

3 Ways of Motherboard Identification in Windows Read More »

Linux – Switching to zsh

zsh (“zee shell”) is awesome.  Alas, its still not installed by default in most Linux distributions.  Here’s how to install & configure zsh on Debian 9: grokman@li598-26:~$ sudo apt-get update [sudo] password for grokman: Ign:1 http://mirrors.linode.com/debian stretch InRelease Get:2 http://mirrors.linode.com/debian-security stretch/updates InRelease [94.3 kB] Get:3 http://mirrors.linode.com/debian stretch-updates InRelease [91.0 kB] Hit:4 http://mirrors.linode.com/debian stretch Release Fetched

Linux – Switching to zsh Read More »

WiFi Routers / Network / Internet [part 1]: Optimal Configuration For Faster Speeds How To

Description How to optimize your network for a faster internet, a faster home network & a faster Wi-Fi. A “top 10” list of actionable items you can take to improve your home networking experience 1:15 Wires are GREATER THAN Air 3:34 Balance your load 4:59 Strategic Router Placement 5:25 Scan your neighbors! & Choose Dead

WiFi Routers / Network / Internet [part 1]: Optimal Configuration For Faster Speeds How To Read More »