Moving mailcow to existing docker

leifnel

Company is closing, but I’d like to keep the mailserver running for some time.
Currently mailcow is on a virtual vmware machine.
I have a machine running docker already.
Is it possible to install mailcow-dockerized on that, and keep the existing stacks and containers running?

D4niel

What’s wrong with making a backup with the supplied script and importing the data on the new install?
Or maybe you can just do a snapshot of the machine and boot it back up?

leifnel

D4niel
The mailcow installer also install docker.
What I don’t know is what happens if I try to install on an existing docker with existing stacks and containers.

That’s my question.

D4niel the machine i want to move mailcow to is not a VMware VM, it’s a hosted vps

mlcwuser

leifnel The mailcow installer also install docker.

Not sure what you mean, because Mailcow doesn’t have an installer. Basically the installation process is as follows:

Install Docker and Docker Compose on your server (you can obviously skip this step if it’s already installed)
download the mailcow-dockerized folder
unpack it
generate the config file and modify it to your needs
modify the docker-compose.yml file if necessary, or integrate it with your existing one (not sure how to do that properly, not really a Docker expert)
start the whole thing with docker compose up -d.

https://docs.mailcow.email/i_u_m/i_u_m_install/