Inside Core-Admin, with the Mail admin app, you configure a notification that is sent when mailboxes are overquota (admin notification) but also you can make the system to send a quota notification to the end user directly.
For that, open Mail Admin app and go to the quota notification options as shown in the following video:
However, in the case you want to change when are those quota notified and the frequency, you will have to:
Update cron specification locateYOUTUBE URLd at the following file /etc/cron.d/crad-mail-quotas to adjust it to your needs. Remenber to just update those lines running the following command: “crad-mail-admin-mgr.pyc -k -f”
To avoid having the file updated by the system due to a package upgrade, add immutable flag with the following command:
Configuring max POST size (post_max_size and upload_max_filesize)
Core-Admin starting from revision 5110, supports configuring easily the max POST size you can do to a given web size, known also as php settings “post_max_size” and el “upload_max_filesize”.
For that, get inside your Core-Admin panel as admin user, select a particular web site you want to update, and then click to “Site options”
If the option is not configured, it will be shown as “not configured”. Now, you only have to select it by clicking over it, then setup the required value (in megabytes MB) and then click on “Edit option”. With that you are done.