iRedMail — Upgrade Ubuntu 24.04 to 26.04 ?

Re: Upgrade Ubuntu 24.04 to 26.04 ?

2026-10-29T03:24:37Z

n9yty wrote:

Can that be done in-place, or does it require a full backup and clean reinstall?

- It's ok for in place upgrade for the OS itself, and it's always a good idea to do backup.
- Ubuntu 24.04 offers Dovecot 2.3, but 26.04 offers 2.4 which has incompatible config syntax, which means your Dovecot will be broken right after os upgrade, please do some practice with this tutorial for Dovecot upgrade: https://docs.iredmail.org/upgrade.debia … ml#dovecot
- SOGo is not available on ubuntu 26.04, so if you need SOGo, don't upgrade for now.

Re: Upgrade Ubuntu 24.04 to 26.04 ?

2026-10-29T01:15:54Z

If you are in a position to take a snapshot (if this is a virtual server), do so. There are some disruptive updates (dovecot in particular) that will take you some time to sort out the configs.

I don't foresee any issues with your upgrade path, however, as I'm currently on (unsupported) Ubuntu 26.10 and ran 26.04 since it was in beta.

Tangentially, to any who come after, do NOT upgrade to 26.10 without looking ahead at the impacts to mariadb (libmysqlclient24 is not your friend in this update if you are operating with IP connections).

Upgrade Ubuntu 24.04 to 26.04 ?

2026-10-28T22:47:23Z

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.8.9 (MariaDB)
- Deployed with iRedMail Easy or the downloadable installer? Downloadable long ago
- Linux/BSD distribution name and version: Ubuntu 24.04.5 LTS
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL/MariaDB
- Web server (Apache or Nginx): Nginx
- Manage mail accounts with iRedAdmin-Pro? No, just regular iRedAdmin
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

No errors, just wondering about upgrading Ubuntu from 24.04 LTS to 26.04 LTS. Can that be done in-place, or does it require a full backup and clean reinstall? I've had wonderful luck in the past with updates, but thought it was worth asking about.