I’ve hosted my own email for 2 years now. Using proxmox mail gateway on a 5€ hetzner VPS. it relays mail to my mail server which I host at home. I’ve dealt with my home public IP changing every now and then with 2 simple scripts. SPF, DKIM, DMARC is all set up.

All in all, it’s relatively low maintenance. PMG makes a good job filtering all the crap and I have yet to receive and actual spam in my inbox (I only had a couple false positives).

I documented the whole setup, can share if you want.

Yeah but doesn’t explain why he can rdp to his win10 but not smb, also he gets a denied access not a not found error.

OP have you checked the status of your windows firewall and the network connection? Does windows say you are on private or public network?