Use Nginx as SMTP proxy
SMTP proxy would help us lots in MTA management. we can use it to
- Doing authentication
- Load balancing
- MTA routing
- Implement traffic control
The difficult part is rpi zero w don't have lan or usb-a port. It's impossible to setup bluetooth game pad without ssh and vice versa.
mount /dev/sda1 tmp vim tmp/cmdline.txt # boot=/dev/mmcblk0p1 disk=/dev/mmcblk0p2 quiet vt.global_cursor_default=0 loglevel=2