Archive for August, 2016

Updating notification time for mailbox quota exceeded

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:

  1. 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”
  2. To avoid having the file updated by the system due to a package upgrade, add immutable flag with the following command:
    chattr +i /etc/cron/crad-mail-quotas


Posted in: Administrador de Correo, Administration, Core-Admin, Mail Admin

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Managing max POST size for a given web site — php post_max_size — php upload_max_filesize

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”

Core-Admin Webhosting management site option view

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.

Posted in: Apache2, Core-Admin, Core-Admin Web Edition, PHP

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KB 02082016-001 : failed to map segment from shared object: Cannot allocate memory

Article keyword index


If you get the following error while starting core-admin agent or core-admin server (turbulence process), or something similar:

ImportError: /usr/lib64/python2.6/lib-dynload/ failed to map segment from shared object: Cannot allocate memory

If you already have checked your system have enough memory available, then possible there’s a ulimit configuration problem.

Affected releases

All releases may suffer this problem. It’s not a bug but a system resource configuration problem.


The problem is caused by a system ulimit configuration that is limiting the amount of memory that can be used by the core-admin agent or the core-admin server (turbulence).


You can run the following commands to see if it solves the problem:

ulimit -m unlimited; ulimit -v unlimited

After that, try to restart the agent to see if the problem is solved.

Long term solution

Upgrade your core-admin packages. Since release rev5010, it is already included a fix to automatically correct this setting when starting the software.

Posted in: Administration, KB, Resource limits

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