Setting up stalwart mail server with CPM as reverse proxy

[zwiterion-pixel]

Hi,

I would like to set up stalwart mail server using CPM as reverse proxy.
As per Stalwart docs, it needs L4 to be able to forward the mail ports (25, 465, 993, 4190) and follow this set up :

{
    layer4 {
        0.0.0.0:25 {
            route {
                proxy {
                    proxy_protocol v2
                    upstream 127.0.0.1:10025
                }
            }
        }

        0.0.0.0:993 {
            route {
                proxy {
                    proxy_protocol v2
                    upstream 127.0.0.1:10993
                }
            }
        }

        0.0.0.0:465 {
            route {
                proxy {
                    proxy_protocol v2
                    upstream 127.0.0.1:10465
                }
            }
        }

        0.0.0.0:4190 {
            route {
                proxy {
                    proxy_protocol v2
                    upstream 127.0.0.1:14190
                }
            }
        }
    }
}

example.com {
    redir https://www.example.com{uri}
}

www.example.com {
    root * /var/www/imkerei

    file_server
}

mail.example.com {
    reverse_proxy https://127.0.0.1:10443 {
        transport http {
            proxy_protocol v2
            tls_server_name mail.example.com
        }
    }
}

https://stalw.art/docs/server/reverse-proxy/caddy.

I am trying to do it in CPM via L4 Proxy Hosts. An exemple for port 25 as follow (and I tried to create one for each relevant port) :

First of all, is that the way to achieve it ?

When I validate this set up, I get this :

Then, my l4 container doesn't not work anymore and I have to delete the l4compose file in the volume to remove the config and restart the container.

Do you have any advice to better achieve the stalwart reverse proxying through CPM ?

Thank you in advance.

[fuomag9]

Then, my l4 container doesn't not work anymore and I have to delete the l4compose file in the volume to remove the config and restart the container.

Please raise an issue for this