I did run mailserver(s) at home for a while in early 2000s. Proved difficult when I once went on holiday as I switched it off and then it got flooded with emai

I did run mailserver(s) at home for a while in early 2000s. Proved difficult when I once went on holiday as I switched it off and then it got flooded with emails (mostly spam) when I got back (from backup mxs run by friends). Had my ISP call me as worried my PC was on a botnet due to sudden traffic. Explained I was running Linux, and they immediately said: "thats fine then have a nice day". Thought perhaps they would need more detail but no. ¯\_(ツ)_/¯ As others have said. Today's cheap nano-esque cloud instances (with swap disk enabled) on AWS and similar is easier to have running 24/7, and less risk it will burn your house down...