Email - 0x80042109


If you are connected to the Internet through MSN, the Microsoft Network, and you attempt to send messages by using an account other than your MSN e-mail account, you receive a prompt for your logon credentials for the Simple Mail Transfer Protocol (SMTP) e-mail server. If you click the OK button, you receive the logon prompt again. If you click Cancel, you may receive an error message that is similar to the following error message:
Task ' - Sending and Receiving' reported error (0x80042109): 'Outlook is unable to connect to your outgoing (SMTP) e-mail server. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'


The internet security software or ISP you are on is blocking port 25.


1. You can try to repair your email client and use port 587 for the outgoing SMTP mail port. A link below has been provided to our repair email section.

Article ID: 796

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