Discourse was installed on an Ubuntu 20.04 computer. Everything is running smoothly. However, we are having trouble with the email trigger; emails are not being sent or received. We are operating a docker container-based application called Discourse. Getting net Read out error. No logs of sent or bounced have been collected.
I have rebuilt the forum and tested in all the possible ways.
I have tested the SMTP server with Telnet:
Telnet connected to the SMTP server. It was working but not working on the forum. Done all the trouble shooting.
AI-generated summary
Poorvi_Arora is experiencing issues with email functionality on a Discourse forum installed on Ubuntu 20.04 using Docker, despite the system running smoothly otherwise. Emails are not being sent or received, and no logs are being generated, with a net read timeout error observed. They have attempted troubleshooting and tested the SMTP server via Telnet, which worked, but the forum still fails to send emails. Tobiaseigen advises following the official Discourse installation instructions, while pfaffman suggests referring to the troubleshooting guide for email on new installations for further assistance.
Hi Poorvi! And welcome to our community! 
Can you confirm you followed the official install?
Hi @tobiaseigen
I have followed the steps mentioned in the below attached link for installation.
https://linuxways.net/ubuntu/how-to-install-discourse-on-ubuntu-20-04-lts
Only the official install is supported here. I recommend you try again using the official install instructions. Let us know how you get on!
Though that’s not the conical official install page, it’s still the same thing.
Have a look at