Clean Install Debain 12 Bookworm. Fail start at Boot

[toomanylogins]

I have done another clean install on debian 12. All ok however on restart the stalwart-mail service does not start automatically. Third time I have tried this to no avail. Any ideas how to amend the install.sh

[stappersg]

Any ideas how to amend the install.sh

Start with sharing what you see.

[toomanylogins]

The issue is as follows. I use the excellent Turnkey Linux appliances as the base for my server VM's and started with the postgres appliance. Turnkey comes with postfix enabled by default and this conflicts with stalwart. If postfix starts first, then it should work because stalwart-mail.service will kill it. But if it starts before postfix, then I suspect that postfix will kill stalwart.
See explanation and the fix is to disable postfix.
https://www.turnkeylinux.org/forum/support/thu-20250501-2044/start-service-boot#comment-57839