NOTE: This post is about ISPConfig 3.0 and not 3.1 and newer. ISPConfig 3.1 and newer has DKIM support builtin, you can simply enable DKIM in ISPConfig 3.1 GUI now for the mail domain. DKIM is a system to verify the sender and integrity of emails. ISPConfig 3 uses amavisd-new as content filter for spam ... Read more
You get the following error message while installing a .deb package on Debian or Ubuntu or while installing Updates? E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily unavailable) E: Unable to lock the administration directory (/var/lib/dpkg/), is another process using it? This error means that there is already an apt process running or ... Read more
To repair a VMware virtual hard disk on Windows 10, go to the VMWare site and download vdiskmanager-windows-7.0.1.exe2.zip (see also https://kb.vmware.com/s/article/1023856) Repair VMware Virtual Hard Disk on Windows 10 Unzip the folder. Rename the file to vmware-vdiskmanager.exe and copy it following location. C:\Program Files\VMware\VMware Workstation or C:\Program Files (x86)\VMware\VMware Workstation if you have 64-bit operating system. Shut down ... Read more
While expanding VMware workstation, you might get the following error: Error VMware Workstation error message: The specified virtual disk needs repair Try the following solution, Solution Repair the virtual hard disk by following this tutorial. https://kb.vmware.com/s/article/1023856
To download VMware virtual disk manager, go to the following link: https://sourceforge.net/projects/vmdkutil/?source=typ_redirect
When you get the following error on VMware, try to do the following workaround. Error: This virtual machine appears to be in use. If this virtual machine is not in use, press the "Take Ownership" button to obtain ownership of it. Otherwise, press the 'Cancel' button to avoid damaging it. Solution: Turn off the VM. ... Read more
The pure-ftp daemon by default has a recursion limit of 2000 files, this prevents the server from showing more then 2000 files when you browse a directory with an FTP client. To expand this Limit to e.g 5000 files, create or edit the file /etc/pure-ftpd/conf/LimitRecursion and add a line "5000 500". The first number is the ... Read more
Ubuntu's Unity graphical shell is pretty good when it comes to customization. Just think of a change, and you'll find that it can be done - for what it's worth, you can also move the Unity Launcher from side to bottom starting Ubuntu 16.04. However, there are certain things that are difficult to achieve in ... Read more
The other day, I was studying about the Linux du command when I stumbled upon its --files0-from option that enables the tool to accept input file/directory names written in a file. The option has an associated condition that names specified in the file should be NUL terminated. Now, it was when I started entering names ... Read more
While shutting down (or other similar operations like restarting and logging-out) aren't difficult to launch in Ubuntu (you can find them in the Gear system menu on top-right corner of your desktop), some users - for whatever reason - may want to have a Unity Launcher icon for them. In this tutorial, we will explain ... Read more