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DKIM Signing for postfix mail server Ubuntu Server 12.04

DomainKeys Identified Mail (DKIM)   L ets an organization take responsibility for a message that is in transit. The organization is a handler of the message, either as its originator or as an intermediary. Their reputation is the basis for evaluating whether to trust the message for further handling, such as delivery. Technically DKIM provides a method for validating a domain name identity that is associated with a message through cryptographic authentication. In essence, it will help you to avoid going your mail into spam. Follow each steps remember to change example.com with your domain . And selector with your selector(ie, any text) . 1.Login to root and install opendkim sudo su sudo apt-get install opendkim opendkim-tools 2.Making directory and generating keys mkdir /etc/opendkim/ cd /etc/opendkim -s means selector so change the word after it we have to chose a selector, here selector -d means domain so change the word after it as our need,here example

Making colorful PDFs from web pages

This article show how to print the web pages into pdf. Press Ctrl + P after completely loading the page. Chrome In Google Chrome select Save as PDF, set Margins : None and tick Background colors and images. Now press Save button and give the filename. This is gives best pdf on my experience. Firefox For Firefox, in windows, you may not get print to pdf options by default. So you have to install either PDFCreator or PrismoPDF . After pressing Ctrl + P You get  a window, shown below, from which you have to select Printer Name ( PDFCreator here) You can make sure it is color by clicking in Properties in the above windows Now press ok. Then get another windows in which you have to select Save .   If you like you can also try changing options in the above figure.

Playing Android Games, Running APK in Windows 7,XP etc.

First you need to install Bluestacks Bluestacks Download After downloading this file you have to run the file to complete the installation process. You need Internet connection to complete the above step After installation is done you can install almost any apps from PlayStore, or 1mobile. Also if you have apk file then you can install by double clicking it (No internet needed). You can access apps from Apps shortcut   in the Desktop.      NB:- You need atleast 2GB to run this app

Google Input Tools: Typing many Languages with ease in Windows

This post shows you how to type many languages with ease. If you know how to pronounce, then you can type. For example, if you know Malayalam, then you can type it in just how it sounds in english(Manglish). Ente veedu itha എന്‍റെ വീട്‌ ഇതാ Now let me show how to work with Hindi  mera nam ajeeb hum मेरा नाम अजीब हुं .  Installation  Go to Google Input Tool Now select from available languages and download it. After installation you will see some thing like this in Taskbar Now you select one of your language. I am familiar with only these four. You can have even more. You can use Ctrl + J to Toggle between two Languages Select your language and type. That's it. It is supported in almost any applications (except some versions of Adobe Photoshop, as my friend told me).  If you find it difficult to type some thing you may click on the keyboard symbol show and click on any symbols.  for example when i typed hum हु  after typing hu i used

AndroVMPlayer : Improved Android Virtual Machine

AnrdoVMPlayer AndroiVMPlayer is built on on VirtualBox it provides a performance increase to our installed Android (AndroVM's built in Android Virtual Machine, see Official Page ) What you want to do is just install Android as i mentioned in the post ( AndroVM ). Just extract the zip file into a place where you like. ( Zip 32-bit , Zip 64-bit Download appropriate version for your operating System). Right click on AndroiVMPlayer.exe , then from the menu, Send To > Desktop (Create Shortcut) . Now on Desktop there will be a icon  Running the AndroVMPlayer Now right click on it and Run it as Admin     Now select a Resolution  that you like  and Android you previously installed.  Press Run . Some time it says Virtual Machine (VM) is in incompatible state. It is due to the state of VM inside your VirtualBox is Saved . So you should open the AndroVM using VirtualBox (Start),     then close it and PowerOff the Machine. Now start