How To Fix ‘550 Permanent Failure For One Or More Recipients’

As a long term system administrator, we deliver technical help for customers round the clock. Since our support also includes helping customers with their email problems, so we solve many mail server related issues for our customers. One such issue our customers face is 550 permanent failure for one or more recipients. Today in this article we will see how…

How to Fix the 550 No Such User Here Email Error

550 Error is generally the most common error. It comes with a message like “550 No Such User Here”. Such errors happen when sent email is not delivered, the user name cannot be found or not accessible by the server. This type of error you get in both way, let’s suppose you are sending email from your server to another…

Linux Malware uses Raspberry Pi to mine Cryptocurrency!

What is Raspberry Pi? A Raspberry Pi is a series of small computers having a single chip designed by the Raspberry Pi Foundation in the UK for the promotion of the basics of computer science in schools among the teenagers. Approximately more than 5 million Raspberry Pi devices have been sold by the Raspberry Pi Foundation before February 2015 and 11…

Many Devices are still Infected by WannaCry Ransomware Attack!

Many times we’ve heard that kidnappers kidnap someone and they demand some ransom for releasing the person. Hackers used their intelligence for the same purpose as they encrypt the victim’s data and demand ransom for releasing the data, otherwise, data will be lost by the victim. For this purpose, one of the malicious malware is now being used by the…