==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): as root - 0.9.9
- Deployed with iRedMail Easy or the downloadable installer? installer
- Linux/BSD distribution name and version: ubuntu 16.04
- 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.
====

postmaster can get mail, but not regular users since upgrading iredadmin on sept 27, 2021

root@mail:/opt/iredapd/libs# systemctl status iredapd.service
● iredapd.service - iRedAPD (A simple posfix policy server)
   Loaded: loaded (/lib/systemd/system/iredapd.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Thu 2021-10-14 18:55:46 UTC; 9min ago
  Process: 5623 ExecStart=/usr/bin/python /opt/iredapd/iredapd.py (code=exited, status=1/FAILURE)

Oct 14 18:55:46 mail.domain.com python[5623]:     from libs import __version__, daemon, utils
Oct 14 19:11:40 mail.domain.com python[6463]:   File "/opt/iRedAPD-2.4/libs/utils.py", line 16, in <module>
Oct 14 19:11:40 mail.domain.com python[6463]:     from libs.logger import logger
Oct 14 19:11:40 mail.domain.com python[6463]:   File "/opt/iRedAPD-2.4/libs/logger.py", line 119, in <module>
Oct 14 19:11:40 mail.domain.com python[6463]:     log_level = getattr(logging, str(settings.log_level).upper())
Oct 14 18:55:46 mail.domain.com python[5623]: AttributeError: 'module' object has no attribute 'log_file'
Oct 14 18:55:46 mail.domain.com systemd[1]: iredapd.service: Control process exited, code=exited status=1
Oct 14 18:55:46 mail.domain.com systemd[1]: Failed to start iRedAPD (A simple posfix policy server).
Oct 14 18:55:46 mail.domain.com systemd[1]: iredapd.service: Unit entered failed state.
Oct 14 18:55:46 mail.domain.com systemd[1]: iredapd.service: Failed with result 'exit-code'.