On 2021-07-08 1:29 a.m., Plutocrat wrote:
First thing to note is that Ubuntu 18.04 is a Long Term Service release, and will be supported until 2023. So no matter how naggy Ubuntu is, you don't actually HAVE to upgrade at this point. You may disable the prompt if if bothers you: just remove or comment out the relevant file in /etc/update-motd.d/
Now the pressure is off, and you have a bit more time, maybe the best idea would be to build and configure a new server using Ubuntu 20, or any other distro, and then migrate the data over to it with dsync. That affords you an opportunity to test the new config before one final sync, and switching the MX records to point to the new server.
It would also be a good opportunity to switch to using the official Dovecot repositories. https://repo.dovecot.org/
On 08/07/2021 09.15, Shawn Heisey wrote:
I have a mail server in AWS that is currently running Ubuntu 18. Every time I log in, I am reminded that I can upgrade to Ubuntu 20.
On Ubuntu 18, the dovecot version is 3.3.0-1ubuntu0.3. On Ubuntu 20, it is 2.3.7.2-1ubuntu3. Many other packages, probably including the mysql server, would also be upgraded.