> > > I do not need to receive any emails on my VPS (I using my home server to > that, storing emails starting from 2002 using dovecot and roundcube - we > are happy with this). > Hm.. how can you receive emails for your domain on your home server? What will the MX record contain?
> Seem to be I need sasl authentication between my home server and vps > server. That mean I need to study how do it with exim4 (on my home server). > Btw, I like what Bernardo Reino suggested: You can create VPN between your homeserver and the VPS (you can use StrongSwan, OpenVPN, Wireguard or any other solution). With it you can: * Skip SASL (because only homeserver would be able to connect to your VPS, you can even close port with firewall) * Do not bother with TLS, because VPN provides encryption (although you need to configure outgoing TLS on your VPS to send emails to the other servers) >