I've been running several small email systems for roughly 25 years in the UK. I generally don't have issues with the big boys and girls. Yes, they send me shi

I've been running several small email systems for roughly 25 years in the UK. I generally don't have issues with the big boys and girls. Yes, they send me shit loads of spam and I drop it on the floor. I generally only go as far as SPF and getting A and PTR to match HELO and don't send any spam. I use Exim and rspamd and a few other things. Google and MS email fettlers are not complete wankers and they seem to be quite reasonable. I could quite easily add your Mom's mail domain to my non work post office and probably deliver her mail. I already do it for several others. However, sadly, I don't know you, nor you know me, so a trust relationship is out of the question. Just in case anyone is going to get whizzed up about US vs UK: my company email domain is within .net, which is nominally US based. When we incorporated and eventually sorted out a name, it turned out that the .co.uk domain was "taken", hence why we went for second best.