[delusional]

I've been running a mail server for years. Never had any problem. I switched ip a year or two ago and didn't even warm up the new one. I do have DKIM and DMARC and that stuff though.

I'm sure you'll have some problems if you start serving newsletters right away, but as a personal mail server, you don't really need to do anything.

I even fucked up the config at one point for a week, and all the mail just patiently waited on the senders mail server for mine to be up again. I really love email.