We just installed a new fresh instance of Gitlab on a Synology NAS (port number 30000).
We use Gmail to send emails. As it is a Synology package install (with docker) we modified the env variables in the container to get it work.
When an email is sent by gitlab the url is localhost:30000
So we tried to change the GITLAB_HOST from localhost to our local IP (192.x.x.x) to reach the gitlab server.
But unfortunately when we do this emails notifications stops working.
Any suggestions ?