Smtp Exception Failure Sending Mail

If you’re using email as a major communication tool, there is a chance for you to receive the “SMTP Error: Exception Failure Sending mail > System.Net.WebException: Unable to connect to the remote server” message. This might happen at least once when sending an email message from your account.

Even if this error message looks tricky, it is easy to resolve.

So, if you’re receiving this error message for the first time, don’t worry because you have visited the right page. This page explains why you receive this error and how to fix it.

Resolving “SMTP Error: Exception failure sending mail”


This error message is displayed on the screen when:

  • Step :1Your account is unable to connect to the SMTP server.
  • Step :2Your computer is not connected to a proper or stable internet connection.


To fix the “SMTP Error: Exception failure sending mail” issue, first, check whether your computer (on which you’re facing this SMTP error) is connected to a stable internet connection.

If not, connect it to a stable internet connection and try to send an email message.

If you receive the error message even after you connect your computer to a stable network, check and reconfigure the following (if necessary):

  • Step :1The SMTP settings of your account
  • Step :2The Firewall settings to allow your email account’s SMTP port

Configuring the SMTP settings

This troubleshooting section will show you how to check and configure the SMTP settings in the Outlook email client.

  • Step : 1 Open the Outlook application (that you're using to access the email account) on your computer if it is closed.
  • Step : 2 Click on the Account Settings menu followed by the Account Settings option.
  • Step : 3 Go to the Email tab.
  • Step : 4 Locate the email account for which you want to check the SMTP settings and double-click on it.
  • Step : 5 Now, the window displaying the selected account’s incoming and outgoing server details will open.
  • Step : 6 Check the SMTP settings and reconfigure them if necessary.

Configuring the firewall settings (Windows)

  • Step :1Open Command Prompt with admin rights.
  • Step :2Type netsh firewall show state in the Command Prompt window.
  • Step :3Press Enter.
  • Step :4Check whether your account’s SMTP port is blocked. If yes, configure the firewall settings to allow it.

Contact us if you need real-time technical assistance in clearing the “SMTP Exception failure sending mail” issue.

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