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Quick Hacks to Fix Outlook Error Code 0x8004210b or Sending Reported Error

  author
Published By Ashwani Tiwari
Anuraag Singh
Approved By Anuraag Singh
Published On August 29th, 2020
Reading Time 5 Minutes Reading

Are you an MS Outlook user who is facing some technical issues while sending or receiving emails? Don’t panic! Stay tuned as we will provide you with some effective approaches to resolve the sending reported error 0x8004210B in Microsoft Outlook.

But before we proceed, it is better to know about this Outlook 0x8004210b and its reasons for the occurrence.

What is the Outlook 0x8004210b Error Code?

Generally, this error occurs when you try to send emails and the operation times out. Then, this error message gets pop up on your screen “Sending reported error 0x8004210B. The operation timed out waiting for a response from the sending (SMTP) server”. The email remains in the outbox folder even after giving the send command. The other case is displayed in Outlook when an SMTP address in the distribution list is incorrect or corrupted.

Possible Reasons for the Outlook Error 0x8004210b

There are many factors that are responsible for the occurrence of the error Some of them are mentioned below:

  1. Incorrect port number for the outgoing (SMTP) server.
  2. Virus or malware infection.
  3. Incomplete MS Outlook software installation.
  4. Deletion of MS Outlook related files etc.
  5. Corrupt Outlook PST data file.

Important Tips to Avoid MS Outlook 0x8004210b Error

  1. Make sure that you are connected to the Internet.
  2. Check your antivirus manufacturer’s website for updates or additional suggestions.
  3. Delete suspicious email messages from your Outlook mailbox.
  4. Ensure that your email profile works correctly.
  5. Never close MS Outlook while it is performing any read or write operation.

Manual Hacks to Fix Sending Reported Error 0x8004210B in Outlook

First, we are going to discuss some free methods that you can try to resolve this 0x8004210b Outlook 2016 and below versions.

Trick1. Telnet the SMTP port number:

As we know SMTP is the protocol that is used to send email messages from one messaging server to another. Therefore, you can use Telnet to test SMTP communication between messaging servers. Using Telnet can be helpful if you are having trouble sending or receiving messages because you can manually send SMTP commands to a messaging server.

Look at the steps required to do so.

  1. Launch Command Prompt with the Admin privileges.
  2. Now, enter the telnet command: telnet smtp.servername.com 25.
  3. If you are using a Google account, telnet command will be telnet smtp.gmail.com 25.
  4. Copy the command, paste in Command Prompt and hit enter.
  5. You should see the below screen after this. If not, please try to contact your Internet Service Provider

Now, check if the Outlook works fine. If the issue is still exists, you can proceed for further methods.

Trick 2. Check the Outlook Email Account Settings

Sometimes there could be a fault in the settings of your Outlook account. So, it is necessary to check the email account settings to fix the 0x8004210b Outlook.

Here are the steps to do so.

  1. Click on File and click on Account Settings to open the email settings.
  2. Now, click on the “Email” and double click on the email address by which you are not able to send emails.
  3. In the email settings window, click on the “More Settings” button.
  4. Go to the Outgoing Server tab and select the “My outgoing server (SMTP) requires authentication” checkbox. In addition, select the option Use same settings as my incoming mail server.
  5. Change Outgoing Server (SMTP) Port number from 25 to 587.

Now, close all the settings and try to send or receive the test email message. Check whether the issue with sending reported error 0x8004210B gets to fix or not. If the issue remains, move to the next solution.

Trick 3: Disable / Uninstall Anti-virus program

Although the Antivirus helps to protect our data from viruses but sometimes faulty or corrupted Anti-Virus program also causes this issue. It prevents you from sending and receiving emails from the Outlook. Therefore, we suggest you to disable or remove the Anti-Virus program from your system and check if the Outlook works fine.

Trick 4: Run Outlook in Safe Mode

You can try to resolve this Outlook error 0x8004210b by starting the Outlook in safe mode. Follow these steps according to the operating system that you have installed.

  1. Click Start.
  2. In the Search box, type outlook.exe /safe.
  3. Hit on the Enter key

Professional Way to Fix Outlook Error Code 0x8004210b

Here, we come up with a reliable solution that can deal with complex corruption problems associated with the Outlook database PST file. The Outlook PST Recovery application is the automated software that helps the users to repair or recover the corrupted files.

Moreover, it can restore the permanently deleted emails, attachments, calendar, events, etc. The utility is compatible with all the versions of Outlook 2019, 2016, 2013, 2010, 2007, 2003.

Why Experts Prefer the Automated Tool?

This software has lots of prominent features that make the tool as one of the best tools. It is used by many IT experts to retrieve and rebuild their PST data.

  1. Provide a quick and advanced scan mode to perform deep analysis.
  2. Recover the data into multiple file formats like PST, MSG, DBX, MBOX and EML.
  3. Supports recovery of any size.
  4. Preserve and retain meta-data of original PST.
  5. Remove SMINE, OpenPGP Outlook encryption from multiple emails
  6. Has 8 preview modes to view PST mailbox items
  7. Simple and easy to use GUI

Concluding Thoughts

This blog cover one of the most frequent issue that occur in Outlook .i.e. Outlook error code 0x8004210b. It is the Sending Reported Error occurs while sending or receiving an email.

Hence, it is required to resolve the issue efficiently to continue the flow of work. Therefore, we have mentioned multiple manual techniques to repair Microsoft Outlook error message 0x8004210b.

But sometimes these DIY methods unable to fix the issue. So, we have discussed a professional tool that is capable to troubleshoot the error without any hassle.