We will configure a server running Ubuntu to send all mail out to a remote email address via an SMTP server. This is a redo of these instructions..
Again, I just copied an instructional as here. Cant be bothered copying it here, but I did all those steps, except I commented out this line:
#smtp_tls_CAfile = /etc/postfix/cacert.pem
I looked at this log and got some useful info: /var/log/mail.log
SMTPS wrappermode (TCP port 465) requires setting "smtp_tls_wrappermode = yes", and "smtp_tls_security_level = encrypt" (or stronger)
So I added those lines to my config file. Then in testing I noticed that yay it actually sent the mail, although it bounced due to the ‘from address’ not being configured properly, so we create this file: sudo nano /etc/postfix/generic with these contents:
#use 'postmap /etc/postfix/generic' to hash this file
#then 'service postfix restart'
Where hostname is the hostname for the machine, and name@domain is the sender address, which usually needs to be valid with the SMTP server – although Google actually allows improper addresses. You could create different instances for different users, i.e one for root perhaps Then add this line to the config: smtp_generic_maps = hash:/etc/postfix/generic
Finally: sudo postmap /etc/postfix/generic sudo service postfix restart
I have heard about HHO a few years ago, and the last couple days I have been looking into this tech again. It appears the game of whack a mole is continuing by the petro dollar powers that be – many HHO site links are down and only visible in web archives. That being said, there seem to be no shortage of enthusiast inventors making their own devices and websites
Heating with Hydrogen HHO or Hcat. This man does just that.
I have found a full kit for your car made by an auto shop “LaBella’s Auto Repair”, that even includes an OBD II computer to modify the ECU timing automatically. Seems super simple and I am considering buying one.. until…
HHO Installation Frequently Asked Questions
The above video seems very knowledgeable.. perhaps delving into this would require a much deeper dive than a simple plug in automatic OBD ECO controller.. Found an Australian 21 cell device.. This also looks worth watching:
It Runs On Water Stanley Meyer (1995) MUST-SEE VIDEO
I have a solar pool pump inline with a normal pool filter pump. If the pool pump turns off while the solar pump is on.. then the solar pump can’t pump properly. This is an issue since the filter pump sometimes will turn off in hot weather (or if hot water is flowing through it). I built a sensor to require the filter pump to run in order to run the solar pump. Also I ran an external switch for the solar pump.
I will note that working with mains voltages is inherently dangerous, and I’d advise against it for anyone not sufficiently trained.
The circuit consists of a current sensing board ($5.50 with delivery) and a Zero-Cross SSR ($12 delivered…). The sensor is just a coil around one of the conductors in a ‘sensor’ mains extension cable. When current is high enough through the sensor, the SSR is in turn energised, closing the circuit through a second ‘trigger’ extension cable . I put a switch in between the sense output and the SSR. That’s basically it. I thought about a pull-down resistor on the input for the SSR, but since it needs 5v plus a small current to trigger.. I think it should be fine left open.
Initially I used a current sense board with no relay output, although this did not live up to specs delivering 5v digital output and caused a bunch of issues… eventually I gave up trying to implement a transistor/relay and bought a sense board with an inbuilt relay. The components in the system run off 5v and are powered by a USB power adaptor 🙂