SMTP Exception Failure Sending Mail-Clean And Simple Procedure

Basically, SMTP term stands for Simple Mail Transfer Protocol. Here, the email client talks to the SMTP server using a clean and simple procedure to get the emails accordingly. In a perfect world, each time you send an email, the intended recipient would receive it and there would be no issues at all. But in the real world, certain problems exist, and not all emails get delivered to the destination location. It is quite important to figure out what is causing the SMTP exception failure in sending emails. Do check out the whole article to get some helpful troubleshooting steps.

smtp exception failure sending mail troubleshooting steps

Check the Internet connection:

  1. Confirm that your computer is getting stable Internet throughout the working session.
  2. Verify that both download and upload speeds are normal.
  3. For confirmation purposes, you can run a speed test to know the actual speed of your Internet.
  4. However, you can use a 2.4 GHz band instead of a 5 GHz band to get a stable Internet connection.
  5. Eliminate as much interference (solid objects) as possible.

Updating the Windows OS:

Sometimes, the email not sending problem can be solved by simply updating the Windows OS to its latest version.

  1. Go to the Start button.
  2. Go to Settings > Update & Security > Windows Update.
  3. If you manually want to check the updates, then select Check for updates. 
  4. Click on the Install Updates option.
  5. Windows will start updating to the latest OS version available for your PC.
  6. Once the update is done, check whether the “SMTP exception failure sending mail” issue is resolved.

Look into the Antivirus software:

The Antivirus program running on your PC might be the main reason for the “ SMTP exception failure in sending a mail” error message. To disable the Firewall feature on your Windows computer, refer to these steps.

  1. Click on the Windows search icon.
  2. Type “control panel” in the search bar.
  3. Open the Control Panel window.
  4. Click System and Security and choose the Windows Defender Firewall option.
  5. Now, the Windows Defender Firewall window will display on the screen.
  6. Click Turn Windows Defender Firewall on or off in the left panel.
  7. Choose the radio button next to the Turn off Windows Firewall option.
  8. Save the desired changes by clicking the OK button at the bottom.
  9. This will disable the Firewall feature on your Windows computer.
  10. Check if the SMTP exception failure in sending mail problem has been resolved.
  11. If not, try to change the port itself.

Repair the antivirus software:

Repairing the antivirus software is one of the great initiatives one needs to take on their computer system.

  1. Go to the Control Panel window.
  2. Click on the Programs and Features section.
  3. Scroll down the page and then click on the installed antivirus software.
  4. On the drop-down menu, click the Repair option to initiate the repairing process.
  5. Once the repair is done, reboot the system.
  6. Check whether the problem persists or is gone.

To get assistance from our technical experts in resolving the SMTP exception failure in sending mail problem, click the Call button provided on this webpage.Also, fix how to send the mail issues here.