==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.6.8 MARIADB edition
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version: Debian 11 bullseye
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): nginx
- Manage mail accounts with iRedAdmin-Pro?: No
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hey,

I'm planning to move from Debian 11 to Debian 12. Mostly because Debian 11 still uses php 7.4 and also because clamav is still running on 0.103.10.

I tried to upgrade php from 7.4 to 8.x manually and it fails because the web interface is not loading anymore. I also tried to upgrade clamav manually but it always fails while installing.

What is the best way to upgrade my system to Debian 12 and do I need to reconfigure things in my iRedMail install?