On Thu, 17 Dec 2020, Marc Roos wrote:
I would not choose centos 8 it has EOL < than centos7. IBM is pulling the plug on the centos distribution, and makes it more or less a beta for the rhel. Thus centos7 and then you have a few years to decide what to choose. Enough to go to full containerized eg. ;)
We own the servers and use CT (LXC). The IBM move is clear, but going to C7 today seems to me not a good choice. It is in its descending stage and in a couple of years packages are going to became very outdated. If RH8 remain "open source" I suppose the community or some interested medium level company that use CentOS for their business can became a new CentOS and switch to a different named distro is supposed to be only a question of replace repositories. That seems to me a smoother path (IMHO). Debian 10 is EOL on 2022 Ubuntu LTS seems a solution, but I hadn't ever used it (I may be wrong, but in the past Canonical don't inspire me to much trust).
Other options (not too "exotic")?
You do not need to rsync, dovecot can sync messages. I am just in the process of migrating a server from a different network to a different mailbox format.
My approach was to create an 'archive' namespace on shared slower but distributed storage so I do not have to move to much data.
I am studying the situation, but there are many variables and the old age of the source server probably meke it more complex. And I am not a dovecot expert ...
Thanks, B.