Smtp Exception Failure Sending Mail

The Antivirus program running on your PC might be the main reason for the SMTP exception failure sending mail error message. To disable the Firewall feature on your Windows computer, refer to the easy instructions given here.

  • Step 1: Go to your Windows computer and then launch the Control Panel window.
  • Step 2: Click the System and Security link and choose the Windows Defender Firewall option.
  • Step 3: Now, the Windows Defender Firewall window will display on the screen.
  • Step 4: Click the ‘Turn Windows Defender Firewall on or off’ link on the left panel to aolve SMTP exception failure sending mail error.
  • Step 5: Select the radio button next to the ‘Turn off Windows Firewall’ option.
  • Step 6: Save the changes made in the Windows Defender Firewall window by clicking the OK button at the bottom.
  • Step 7: This will disable the Firewall feature on the Windows computer.
  • Step 8: Check if the SMTP exception failure sending mail problem has been resolved.
  • Step 9: If not, try to change the port.
  • Step 10: To get assistance from our technical experts in resolving the SMTP exception failure sending mail problem, click the Call button provided on this web page.