Control panels - Spheron1

April 24, 2025

Removing APNs certificates in cPanel

For many years cPanel has provided support for push notifications on Apple devices for IMAP, CalDAV and CardDAV using the Apple Push Notification service (APNs).In order to set this up, you need to provide APNs certificates for com.apple.mail, com.apple.calendar and com.apple.contact from Apple, which can be installed Service Configuration -> Manage Service SSL Certificates -> iOS Mail Push Notifications (APNs)...

cPanel/WHM Comments: 0

May 28, 2020

Sendmail on Plesk – user is not allowed to send mail

I recently ran into a strange problem on a Plesk server where one subscription was inexplicably unable to send email using sendmail (which is what the PHP mail() function uses). The following was being logged in /var/logs/maillog for each attempt: plesk sendmail[1628571]: handlers_stderr: ERROR:__main__:Rejecting message: system user uid='<user ID>’ is not allowed to send mailplesk sendmail[1628571]: handlers_stderr: DATA REPLY:554:5.7.0 Your...

Plesk Comments: 0

April 3, 2019

Changing the locale in Ubuntu Server

When logging into any cPanel server via SSH from an Ubuntu jump server I was seeing some strange warnings from Perl which I didn’t see when logging in from my laptop running macOS: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = “C.UTF-8” are supported and installed on...

cPanel/WHM/Mac OS X/Ubuntu and Debian Comments: 0

October 16, 2015

cPanel 54

Yesterday cPanel laid out the upcoming changes in cPanel 11.54, or just cPanel 54 as it’s now known (see http://blog.cpanel.com/whats-next-for-cpanel-whm). Whilst light on any details, there are at least some interesting tidbits. The new versioning system This makes very little real world difference, but I can’t help but feel like they’re following Google Chrome and Mozilla Firefox in a race...

cPanel/WHM Comments: 0

June 27, 2014

Parallels Plesk hanging on login

I recently came across a strange problem when setting up a new Windows Server running Parallels Plesk 12. Everything was working fine to being with, and then suddenly Parallels Plesk started behaving strangely. I would select some items in a list and press remove and they would be greyed out as if the AJAX had fired in the background, but...

Plesk/Windows Comments: 0

January 2, 2014

cPanel breaking Dovecot in 11.40

Recently I’ve had a couple of cases where cPanel randomly breaks Dovecot with one of the cPanel 11.40.x updates. In one of these cases, cPanel actually uninstalled the Dovecot RPM as part of the automated, overnight upcp process! In the other cases, Dovecot was still running and accepting connections, but POP3/IMAP clients were getting messages that their passwords were wrong....

cPanel/WHM

December 29, 2013

SolusVM displaying wrong disk usage statistics for Xen PV VMs

Recently some of our Xen PV VMs started to show strange disk space usage statistics in SolusVM – despite there being plenty of space left on the disk in the VM, SolusVM was reporting that the disk was nearly full! I struggled to find any public information about this, but apparently it is a known problem with SolusVM and the...

SolusVM Comments: 0

September 13, 2013

ImageMagick and PHP 5.4

When building the PHP imagick module for ImageMagick on a server running PHP 5.4 (a cPanel/WHM box in this case), you receive the following error: /root/tmp/pear/imagick/imagick_class.c: In function ‘zim_imagick_setfont’: /root/tmp/pear/imagick/imagick_class.c:1442: error: ‘struct _php_core_globals’ has no member named ‘safe_mode’ /root/tmp/pear/imagick/imagick_class.c:1442: error: ‘CHECKUID_CHECK_FILE_AND_DIR’ undeclared (first use in this function) /root/tmp/pear/imagick/imagick_class.c:1442: error: (Each undeclared identifier is reported only once /root/tmp/pear/imagick/imagick_class.c:1442: error: for each...

cPanel/WHM/PHP Comments: 0

May 25, 2013

Not able to unsuspend a domain in Parallels Plesk

If you are seeing the following unhelpful message when trying to unsuspend a domain in Parallels Plesk running on Windows Server: Warning: The domain is still suspended for the following reason: This user account and user’s domain were suspended Then you will need to use the command line domain.exe tool to manually unsuspend the domain: “C:\Program Files (x86)\Parallels\Plesk\admin\bin\domain.exe” –on I’ve...

Control panels/Windows Comments: 0

October 27, 2012

Scheduled backups failing in Plesk 9.5

If you are using MySQL 5.5 with Parallels Plesk 9.5 then you might have noticed that scheduled backups using the built in backup utility have stopped working. Backups manually initiated through the Parallels Plesk control panel interface run normally, but they don’t run automatically on the configured schedule. This is thanks to some compatibility issues between the Parallels “backupmng” tool...