Mail piler archive first PR

[stephdl]

Install and configure mail Piler in NS8

• First attempt uses NS7 to archive email in piler in NS8

We need to wait after final ns8-mail to make transport route on custom smtp port other than 587 or 25

Piler is waiting email on a TCP 2525

in /etc/postfix/transport we need to do (for example, think to postmap and restart postfix)

piler.example.com smtp:[piler.example.com]:2525

in NS7 use the Recipient Relay menu

screen shot of the UI

[gsanchietti]

The overall implementation is good.
We need just some minor adjustments.

[andre8244]

Another improvement: since Piler has its own webapp, let's add a link to it in Status page. Example: https://github.com/NethServer/ns8-nextcloud/blob/main/ui/src/views/Status.vue#L20-L53

[DavidePrincipi]

Is Piler under a FOSS license?

[andre8244]

Just a minor suggestion. Remember to format Settings.vue and Status.vue source code if you haven't already :)

[stephdl]

Actually piler is waiting on TCP 2525 the smtp transaction

[andre8244]

UI part LGTM

[stephdl]

We need to stop now the work on piler the time to wait the development work on ns8-mail. The idea is to use the mail module to make the route to piler and to expose only the TCP 25 port on the wild world web.