On 15/04/2023 17:00, Fabio Martins wrote:
I believe you are trying to use the same IP address for the 3 exim
instances, otherwise the solution would be quite simple binding each
instance to the proper IP address. Right? Or do you have 3 different
public IP addresses?
That's correct - there is only one IP address on the VPS/proxy - which
needs to serve all the Exim servers behind
If you have only 1 public IP, does a solution forwarding to a subdomain
via system_aliases+dsearch+local_parts+cron job updating user list,
would satisfy?
example:
a...@company1.com -> a...@internal.company1.com
e...@company1.com -> e...@internal.company1.com
key...@business2.com -> key...@internal.business2.com
s...@designer3.com -> s...@internal.designer3.com
cont...@designer3.com -> cont...@internal.designer3.com
I can't say that I am really following what you are trying to suggest -
but I don't think having emails on subdomains would help with my problem
--
On 2023-04-15 11:53, Sebastian Arcus via Exim-users wrote:
I have a number of Exim servers behind a NAT gateway (actually
connected with vpn's to a cloud vps - but I'm hoping this is not
relevant to this post). I would like the gateway to send incoming port
25 traffic to the correct Exim server based on SNI in incoming TLS
packets - as different Exim instances serve different email domains.
The setup would look like this:
[Internet]
|
|
(smtp port 25)
|
v
|
[Cloud server]
|
v
|
----------------------------------------
| | |
| | |
[Exim server 1] [Exim server 2] [Exim server 3]
I would have preferred to do this at IP tables level - but apparently
not really possible. It seems the next option would be HAProxy. Has
anyone here used HAProxy or run a setup as above, or know if this is
actually doable? Any suggestions much appreciated.
--
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