==== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.7
- Linux/BSD distribution name and version: Ubuntu 16.04
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Web server (Apache or Nginx): Apache
- Manage mail accounts with iRedAdmin-Pro?
- [IMPORTANT] Related original log or error message is required if you're experiencing an issue.
====

When I freshly boot my VPS - which runs iRedMail and nothing else - I see from the admin page about 1.4 GB of memory used (of my 2 GB plus swapfile).

As time goes on, this number continues to creep up and the VSwap gets used as well.

Is there a reason why memory use goes up (and never down until a reboot)?

Andrew