Re: [exim] Proxy smtp connections to multiple Exim servers b…

On 15.04.23 21:54, Sebastian Arcus via Exim-users wrote:

> The "back-end" machines are physical machines, on regular
> ADSL/VDSL/cable/fibre connections at various locations.

> At the moment
> they send directly to the internet, which requires a static IP and PTR
> record.

> To solve all of the above issues, I am looking into essentially
> diverting all the outgoing and incoming smtp traffic of these servers
> through a single gateway server, which will be a vps/cloud server.

Well, that's off-topic on the Exim-list, but maybe a VPN solution would
fit better. Put three additional static IPv4 addresses and IPv6 /64 on
the VPS, build a Wireguard VPN between the VPS and the Exim servers and
use the VPS as a "proxy" on IP level.

Or move the three Exim servers - as virtual machines - into the
datacenter where the VPS runs. Running servers on consumer or even cheap
enterprise access services will not ensure high availability.


Regards,

Paul