Error 550 is an SMTP (Simple Mail Transfer Protocol) outgoing server error code.
It usually occurs when you try to send emails through your Outlook account and the email message encounters a relay error. The email returns back without being delivered with a 550 error message.
The error message is prompted as either of the following:
"550 Requested action not taken: mailbox unavailable"
"550 5 2 1 mail from refused spam site"
In other words, the error code 550 means that your SMTP server was not able to deliver the sent email to the user.
Error CausesThere are multiple reasons for this error message including:
Further Information and Manual Repair
Regardless of what the reason may be for the error 550 code occurrence, it is advisable to repair and fix the issue quickly to avoid inconvenience.
You may not be able to send emails from your Outlook account if the error continues. This can cause great hassle in corresponding with others timely and may create a big communication gap.
Here are some quick and efficient ways to resolve this issue on your system:
There is no need to panic when you encounter error 550. Sometimes the error message may occur because you inserted the wrong/ incorrect email address of the recipient.
In such a case, cross-check the recipient’s email address to verify if it is correct. If not, insert the correct address and try sending the email again.
If the error still persists, try other methods to resolve it. Sometimes error 550 can also occur due to incorrect SMTP settings.
Fix it to resolve the error. This can be done by opening your Outlook settings Tools and Accounts option. Now go to view/change the email account for the email account you are having problems with.
After that check, the SMTP server is set to mail.yourdomain.com. Then click more settings and then click the outgoing server tab. See if the ‘My server requires authentication for the outgoing server’ is checked. If not, then check on it. Then simply save to confirm changes. Now try emailing again.
Hopefully, this will resolve the issue.
Another reason for the error occurrence can be ISP blockage.
When the junk email volumes increase, network administrators (the people who are responsible for managing ISP servers) place restrictions on SMTP email servers to prevent spam on their network. If this is the reason, contact your ISP administrator to resolve the issue.
Malware and viral infection can also be the cause for error 550. To remove all kinds of viruses including Trojans and spyware and fix the issue right away without compromising on the speed of your PC it is advisable to download Restoro.
This is a highly functional and advanced PC Fixer embedded with multiple utilities like a powerful antivirus and a system optimizer.
It scans your entire PC in seconds, detects and removes all kinds of viruses. Simultaneously, the system optimizer feature ensures the speed of your PC does not slow down during the scanning and virus removal process.
This feature boosts your PC speed significantly.
It is user-friendly and has easy navigations making it quite simple for even those users who are not technically sound to work around it and operate it with ease. It is compatible with all Windows versions.
Click here to download Restoro and resolve the error 550 messages today!

The New and upcoming HAF 700 Evo from Coller master is a beast of a case, but so is its price. The case itself is still not released but as sources say it will be soon, well at least we hope so. The price will be around $500 which is a little on the expensive side of things but the features it is bringing are very impressive.

HAF stands for High Airflow and with this case, you are going to get it but first let us talk about other characteristics of the case. Firstly case is ATX full tower, pretty big going 24.64 x 11.45. x 26.22 inches in size but like all full tower cases it can hold all motherboard types including Mini-ITX, Micro-ATX, ATX, E-ATX. The large case size also lets you place a pretty big GPU, going to 19.29 inches (490 mm) in its length covering currently all available Graphic cards on market.
Being a very big computer case is not just placing motherboard and big GPU, there are other great advantages of it, firstly that you can go wild with your CPU cooler, going all the way to 6.5 inches in cooler height will satisfy all users and having 12x 2.5 or 3.5-inch internal bays will. And if even that is not enough you have 8 expansion slots available.

Inside the casing you will also find 2 front fans with 200mm diameter, 2 rear fans sized 120mm, and 1 bottom fan of 120mm. You can also manually mount standard 120mm fans on top of the case for maximum airflow.
The front side is filled with 4x USB 3.2 Gen 1 Type-A (5 Gbps), 1X USB Type-C (up to 10Gbps), 3.5mm both headphone and audio jack along with a reset switch. Also, the circle in the very front is a hi-resolution LCD customizable display, you know, just to add more flavor and personal touch to the case. Fron is also filled with glass panels emitting RGB light.
Of course, you must also have a Tempered Glass Side Panel and well weight of 53.57 pounds (24.3 kg), yup you read that correctly, beside its hefty price tag this cooler master beast also is pretty heavy. Granted all of the weight comes from the glass front panel it is still a little hard on moving and taking out of the box.
This is also the case where you will not need a single screwdriver, everything is made to be assembled with your hands alone pushing easy assembly into the front row.
So in the end what are my thoughts about this expensive and heavy PC case? Would I recommend it? The answer to that question could depend really on your budget, let us be really honest here if you can afford it, YES, wholeheartedly I would recommend the case, it is great, it feels great, it looks great and the airflow is amazing. However, if you are tight on a budget, there are other great cases with excellent airflow and you might want to skip this one.
Desk 365 is a program developed by 337 Technology Limited and is classified as a potentially unwanted application by a number of Antiviruses. While not technically malware, for many users it is unwanted as it is often distributed as a bundle with other downloads. It allows a fast way to access your shortcuts and applications. Upon installation this program will insert itself into the system registry, adding startup strings to allow it to automatically start every time your system is restarted. The software adds a scheduled windows task to allow it to reopen itself even when closed. The applications also access the internet and add firewall rules to your system, that allow it to access anything without restrictions.
The main executable file for this application is Dock365.exe. It is possible to delete this file preventing the application to run, but its monitoring services and registry entities remain hidden inside your computer.
The software sends browsing information back to its ad servers, displaying custom ads and sponsored products instead of the usual search results. And the app itself pins itself to the start menu and cannot be removed.
“The scratch directory size might be insufficient to perform this operation”This kind of error in DISM occurs when the DISM command is executed from the Windows Recovery Environment due to the limited size permissions of a delivery where the operating is being performed. To fix this DISM error, you need to follow the instructions laid out below. Step 1: First, tap the Win + R keys to open the Run utility and then type “cmd” in the field and tap Enter to open Command Prompt. Step 2: Next, you have to specify a scratch directory that contains the Windows folder and to do that, you can either use the DIR command or the BCEDIT command. So in the elevated command prompt type and enter “dir” or “bcedit”. Step 3: After that, you will see a list of folders inside the C: partition. Now you have to create a folder named “scratch” inside the partition. To do so, execute the following command:
mkdir C:ScratchNote: The command you just entered will create a directory inside the root of the C: partition named Scratch. Step 4: Now that you’ve created the Scratch folder, note that each time you run any of the DISM commands, you have to enter the following code snippet in them:
/ScratchDir:C:ScratchNote: For instance, if you are using the DISM tool to repair the offline Windows image, instead of executing the “Dism /Online /Cleanup-Image /RestoreHealth” command, you now have to execute the “DISM /Image:C: /ScratchDir:C: Scratch /Cleanup-Image /Restorehealth” command. And if you want to remove a selected installed update package, you can use the “DISM /image:C: /ScratchDir:C:Scratch /Remove-Package /PackageName:Package_for_RollupFix~31bf3856ad364e75~amd64~~16299.196.4.9” command. Keep in mind that the mentioned package is only an example. And lastly, you also have to replace the drive letter in the new code snippet when you execute the commands given above.