Hi @Shifty ,
I am able to reach your SMTP server:
So I confirm your SMTP server is up and running.
The problem is between your passbolt server and the SMTP server. If you get a timeout, it means there is a firewall somewhere who is blocking the request.
In your previous post, you said:
I’m using a cloud flare tunnel to do the domain side of things as my Virgin broadband router won’t allow port forwarding and I don’t control what router we use as i live in rented accommodation and I’m not the landlord.
I’m pretty sure your issue is maybe this Virgin broadband router who blocks port 465/TCP.
Cheers,