==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.7.1
- Deployed with iRedMail Easy or the downloadable installer?
- Linux/BSD distribution name and version: Debian12
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx):Nginx
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====
I encountered an issue while using iRedMail. My setup is Debian 12 with iRedMail 1.7.1. Occasionally (sometimes after a few days, other times after a few weeks), I find that the web pages for logging into the mailbox and iRedAdmin cannot be opened. Restarting the system doesn’t resolve the issue. When I check the processes, everything appears to be running normally. Sending and receiving emails through Outlook also works fine, but creating a mailbox user in Outlook results in an error after a long delay. Interestingly, when I restore the system using the virtual machine’s snapshot feature, everything works normally again.

I would greatly appreciate your assistance.