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Topic: High CPU

==== REQUIRED BASIC INFO OF YOUR IREDMAIL SERVER ====
- iRedMail version (check /etc/iredmail-release): 1.4.2
- Deployed with iRedMail Easy or the downloadable installer? Downloadable
- Linux/BSD distribution name and version: Centos 8
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MariaDB
- Web server (Apache or Nginx):Ngnix
- Manage mail accounts with iRedAdmin-Pro? Not yet
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

Hi,

I have just completed a fresh installation of iRedMail 1.4.2 on a Centos 8 VPS (2 vCPU, 2048 MB RAM, 80 GB NVMe). I have followed the instructions very carefully as outlined on the iRedMail website (https://docs.iredmail.org/install.iredmail.on.rhel.html). However after trying to visit the login pages for both webmail and the admin panel, it causes a very high CPU usage for some reason.

When I run a 'top' command in SSH it tells me that the culprits are:
amavis,  clamd & kswapd0

Can anyone shed some light on show to resolve this issue?

Thanks!

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Re: High CPU

As mentioned on iRedMail installation tutorial, at least 4GB RAM is required for a low traffic mail server, so that spam/virus scanning can work well.