Moved Passbolt to new location, email not workig

Checklist
[x] I have read intro post: About the Installation Issues category
[x] I have read the tutorials, help and searched for similar issues
[x] I provide relevant information about my server (component names and versions, etc.)
[x] I provide a copy of my logs and healthcheck
[x] I describe the steps I have taken to trouble shoot the problem
[ ] I describe the steps on how to reproduce the issue

Hello all,
@home i use passbolt for some time and it works great.
I made a new VM instance with Ubuntu 18.04 and the latest passbolt for testing on a remote site.
So imported the vm on the local site, de do not have DHCP ,DNS and the network is local only.
So a assigned fixed IP adress to ubuntu (sudo nano /etc/netplan/01-netcfg)

Edited

 sudo nano /etc/nginx/conf.d/passbolt.conf
  and change the server_name    ip adres to the new ip

sudo nano config/passbolt.php

[code]‘fullBaseUrl’ => ‘http://new_ip’,

email transport 
'default' => [
        'host' => 'local SMTP IP',
        'port' => 25,
        'timeout' => 30,
        'username' => null,
        'password' => null,
        // Is this a secure connection? true if yes, null if no.
        'tls' => null,
        //'timeout' => 30,
        //'client' => null,
        //'url' => null,

[/code]

Now the webpage loads, but the admin account witch i set up does not send email
Smtp answerrs not accepted with Doesnotexist@domain.com

So i found in SendTestEmailTask.php

   $recipient = $this->param('recipient');
        if (empty($recipient)) {
            $recipient = 'Your.name@yourdomain.com';

Now the
sudo ./bin/cake passbolt send_test_email –-recipient=your.name@yourdomain.com runs fine now

But http://my_IP/users/recover , does not send emails
is there any log from the mailer ? or other places to look

How about the /var/log/mail.log on the server? Anything there?

We did change lots of things, the LOG was empty.
In the end we decided to delete the VM-Ubuntu and we did a complete new installation.
Everything is now functioning properly.

Probably addresses of the installation in Passbolt are written at various places, outside the locations mentioned in the starting post.