Email not working SMTP Relay Gmail

Installation Issues
19

The use of “client” in the config was tested by @swebervna and has shown to be working. Cannot send email to Gmail SMTP-Relay - #9 by swebervna

Non-Docker:

'EmailTransport' => [
    'client' => 'ip.add.re.ss'
]

Docker:

# Email
EMAIL_TRANSPORT_DEFAULT_HOST=smtp-relay.gmail.com
EMAIL_TRANSPORT_DEFAULT_PORT=587
EMAIL_DEFAULT_FROM=passbolt@mydomain.com
EMAIL_TRANSPORT_DEFAULT_CLIENT= 'ip.add.re.ss'

Adjust other settings accordingly.