Open Tools -> Accounts -> Select account and hit Properties -> Servers & Advanced
Change the server settings and ports and Apply.
Changing Email Server Settings in Outlook Express
Reply
LibreNMS update to Python 3
You may get the following alert in LibreNMS. Basically you need to install python 3 to keep things up to date.
Python 3 is required to run LibreNMS as of May, 2020. You need to install Python 3 to continue to receive updates. If you do not install Python 3 and required packages, LibreNMS will continue to function but stop receiving bug fixes and updates.
Install Python 3
Install Python 3 with yum, or apt if you are on a Debian based distro.
sudo yum install python3
sudo pip3 install -r /opt/librenms/requirements.txt
Verify LibreNMS is updated and working
Run the following commands to make sure that LibreNMS is working correctly and is up to date.
cd /opt/librenms sudo ./validate.php sudo ./daily.sh
Upgrade AirFiber 11 to 4.1 from SSH
https://help.ui.com/hc/en-us/articles/204977444-airFiber-Updating-the-Firmware
Quick list of commands
ssh ubnt@192.168.1.20 <- Replace with username and IP address cd /tmp wget http://dl.ui.com/firmwares/airfiber11X/v4.1.0/AF11.v4.1.0.bin mv AF11.v4.1.0.bin fwupdate.bin /sbin/fwupdate -m
- Upload the firmware using FTP or SCP to the /tmp directory
- Rename the file from AF11…bin to fwupdate.bin
- Start the upgrade with
/sbin/fwupdate -m
Wait for it to finish upgrading
Linux Screen – Create, Connect, Disconnect, Terminate Sessions
Screen is a handy tool that can help you run scripts on servers remotely without having to worry about the session getting terminated. It seems to operate kinda like a virtual console.
Create Screen Session
Create a new session with a specified name
screen -S SessionName
Example output below. Create session named testsession and print screen sessions.
[bob@localhost imapsync]$ screen -S testsession [bob@localhost imapsync]$ screen -ls There are screens on: 3313.testsession (Attached) 1 Sockets in /var/run/screen/S-bob. [bob@localhost imapsync]$
Disconnect from Screen Session
You can disconnect from a screen session by hitting ctrl + a and then ctrl +d
“ctrl + a” then “ctrl + d”
List Screen Sessions
You can list the screen sessions with
screen -ls
Example
[bob@localhost imapsync]$ screen -ls There are screens on: 3212.testsession (Detached) 2556.xap (Detached) 2 Sockets in /var/run/screen/S-bob. [bob@localhost imapsync]$
Connect to screen Session
You can reconnect to a screen session with
screen -r testsession
Terminate Screen Session
To terminate a screen session, connect to that session and then on a clear line hit ctrl + d
Same way as if you were closing a remote ssh connection.
VIM delete all lines not matching pattern
In Vi you can use the following command to search for a pattern and delete all those lines
:%g/pattern-to-search-for/d
To inverse the operation and delete all lines not matching the pattern, change g to v
:%v/pattern-to-search-for/d
Search and delete lines matching pattern 
Search and delete lines not matching pattern
LuminOx O2 Sensor on Arduino
The LuminOx Oxygen sensor seems to be a pretty decent O2 sensor and easy to get setup and running.
| Pin | Designation |
| 1 | Vs (+5V) |
| 2 | GND (0V) |
| 3 | 3.3V UART* Sensor Transmit |
| 4 | 3.3V UART* Sensor Receive |
| * 5V tolerant |
Wiring Up LuminOx O2 Sensor to Arduino
Fortunately wiring up the LuminOx O2 Sensor to an Arduino is super easy
In the code example below we will use pins 10 and 11 to communicate with the sensor. So you can wire it up as follows
sensor pin 1 -> 5V power
sensor pin 2 -> Ground
sensor pin 3 -> pin 10
sensor pin 4 -> pin 11
LuminOx Sensor and RedBoard 
Arduino Code for LuminOx O2 Sensor
Should be able to just copy and past the code into the arduino editor and upload it.
#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX (O2 Pin 3), TX (O2 Pin 4)
void setup() {
Serial.begin(9600);
mySerial.begin(9600);
}
void loop() {
if (mySerial.available()) {
Serial.write(mySerial.read());
}
}Open up the serial console to view the sensor output
Helpful links
Datasheet: https://www.sstsensing.com/product/luminox-optical-oxygen-sensors-2/
Arduino forum: https://forum.arduino.cc/index.php?topic=601622.15
Sketch uses 444 bytes (1%) of program storage space. Maximum is 32256 bytes.
Sketch uses 444 bytes (1%) of program storage space. Maximum is 32256 bytes.
Looks like this can randomly happen. Things to try to resolve the problem
- Unplug USB cable for a little bit
- Restart Arduino IDE
- Reboot computer
More information here
https://arduino.stackexchange.com/questions/23620/problem-uploading-to-arduino-uno
Remove Outlook Add-ins
In the Outlook “Tell me what you want to do” search area, type COM Add-ins and Launch the COM Add-ins
Find the Add-in and remove it
print_req_error: I/O error, dev fd0, sector 0
More info here https://askubuntu.com/questions/1102580/print-req-error-i-0-error
Looks like the following error is due to there not being a floppy drive.
print_req_error: I/O error, dev fd0, sector 0
Disabling the Floppy Drive in the vSphere VM settings resolves the problem.
Install Microsoft Precision Drivers on Alienware 13 R3
https://www.howtogeek.com/325347/how-to-enable-microsofts-precision-touchpad-drivers-on-your-laptop/
Download and extract the Lenovo driver
https://download.lenovo.com/pccbbs/mobiles/n1mgx14w.zip
Open Device manager, right click on the touchpad and select Update driver
Browse My computer for Driver Software
Let me pick from a list of available drivers on my computer
On the pop up select have disk
Navigate to the extracted Lenovo driver and select Autorun.inf
Open, select next, install, accept the warning
Select Thinkpad 
Installing Windows Precision drivers warning 
Installing Windows Precision drivers 
Windows Precision drivers installed. Need to reboot now.
After you restart your computer you can go to the Windows settings and tweak the precision settings
Other interesting touch pad stuff