Find anyone’s first Tweet on Twitter.com

Discover your first Tweet. Find and share any #FirstTweet. 

Visit https://discover.twitter.com/first-tweet and enter the @username in the search box to view 1st Tweet.

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Do you like amazing facts? Must read.

5 Amazing facts for you…

1. When the computer mouse was invented, it was called the “X-Y Position Indicator for a Display System.”

2. When the mummy of Ramses II was sent to France in the mid-1970s, it was issued a passport. Ramses’ occupation? “King (deceased).”

3. The only number whose letters are in alphabetical order is 40 (f-o-r-t-y).

4. The Vatican Bank is the world’s only bank that allows ATM users to perform transactions in Latin.

5. The sum of all the numbers on a roulette wheel is 666.

Resolve Outlook error- 503 Valid RCPT command must precede DATA

Sometimes you receive a mail bounce report i.e. 503 Valid RCPT command must precede DATA while sending mails from Microsoft Outlook.

Your message did not reach some or all of the intended recipients.
Subject:   mail subject
Sent:   (Date and time)
The following recipient(s) cannot be reached:
‘Ashok Koli’ on  (Date and time)
503 Valid RCPT command must precede DATA

This error indicates- the server is not able to accept the message because SMTP connection is not authenticated. By default, SMTP authentication is enabled at the servers.

In order to avoid the error ‘503 Valid RCPT command must precede DATA‘, we have to enable SMTP authentication for the email account in Outlook. It means that before sending email, we must set up authentication.

Configure email client (MS Outlook) to authenticate automatically

  • Open Outlook. Go to Tools >> Email Accounts, double-click on email account and click on More Settings.
  • Open Outgoing Server Tab.
    • Check “My Outgoing Mail Server (SMTP) requires authentication”
    • Select “Use same settings as incoming mail server”
  • Click OK and then Test Account Settings.

After authentication setup, the mails will be sent/delivered properly.

503 valid RCPT command must precede DATA

Sometimes this 503 error occurs when you have a corrupt outlook PST file. Try repairing the file. If you are still facing difficulties while sending the email, Kindly contact your Hosting support team.

WordPress Permalinks not available

Permalink changes are only available for self-hosted blogs provided through WordPress.org.

WordPress is a publishing platform that makes it easy for anyone to publish online, and proudly powers millions of websites. It comes in two flavors: the fully hosted WordPress.com, and the self-hosted version, whose software is available for free at WordPress.org.

Major difference between WordPress.com and WordPress.org

WordPress Information

For more information on WordPress.com and WordPress.org, please visit: https://en.support.wordpress.com/com-vs-org/

Hadoop makes big data easier to manage

Hadoop: A platform that makes big data easier to manage.

Two fundamentals of Haddop-

1. Large File Storage: Hadoop allows store files bigger than what can be stored on server. You can store many large files.

2. Fast Data Processing: Hadoop provides a framework for processing the data. That’s called MapReduce. Moving large data sets or opening a big file on laptop takes a long time. So rather than move the data to the software, MapReduce moves the processing software to the data.

GFS: Google File System
GFS is a scalable distributed file system for large data intensive applications. Google implemented a programming model called MapReduce, which could process this 20000 PB per day. Google ran these MapReduce operations on a special file system called Google File System (GFS).

HDFS: Hadoop Distributed File System
The Hadoop Distributed File System (HDFS) is a distributed file system designed to run on commodity hardware. Doug Cutting and Yahoo! reverse engineered the model GFS and built a parallel Hadoop Distributed File System (HDFS). The software/framework that supports HDFS and MapReduce is known as Hadoop.

What Is Apache Hadoop?
The Apache Hadoop project develops open-source software for reliable, scalable, distributed computing.

The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models. It is designed to scale up from single servers to thousands of machines, each offering local computation and storage. Rather than rely on hardware to deliver high-availability, the library itself is designed to detect and handle failures at the application layer, so delivering a highly-available service on top of a cluster of computers, each of which may be prone to failures.

Official site of the Apache Hadoop project: http://hadoop.apache.org

Note: Hadoop is an open source and distributed by Apache. GFS is not an open source.
Doug Cutting was an employee of Yahoo!, where he led the project full-time.

The world’s first website went live in 1990

The world’s first website created by Tim Berners Lee at research lab CERN in 1990. The site’s address is info.cern.ch, and provides information about the world wide web – the platform that sits on top of the Internet, where documents and pages on the Internet can be accessed by URLs, and connected to each other via hyperlinks.

Browse the first website: http://info.cern.ch/hypertext/WWW/TheProject.html

Capture

CERN- First website