Microsoft KB Archive/836562

= “Mail cannot be sent - cannot locate the SMTP server 0x80042109” error message when you try to send an e-mail message in Outlook 2002 =

PSS ID Number: 836562

Article Last Modified on 4/6/2004

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The information in this article applies to:


 * Microsoft Outlook 2002

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SYMPTOMS
When you try to send an e-mail message in Microsoft Outlook 2002, you receive an error message that is similar to the following error message:

Mail cannot be sent - Cannot locate the SMTP server 0x80042109

You also may receive a similar error message with the following error message numbers:
 * 0x800cccOE
 * 0x80042108
 * 0x8004210b



CAUSE
This behavior occurs because some Internet service providers (ISP) do not permit message routing through another SMTP server while you are connected to their network.



RESOLUTION
To resolve this behavior, replace the SMTP server for the other ISP or the other e-mail account with the SMTP server that is associated with the ISP that you use to connect to the Internet. To do so, follow these steps:
 * 1) Contact your ISP to obtain the outgoing SMTP e-mail server address.
 * 2) Start Outlook 2002.
 * 3) On the Tools menu, click E-mail Accounts.
 * 4) Under E-mail, click View or change existing e-mail account, and then click Next.
 * 5) Click the account that you want to change, and then click Change.
 * 6) Under Server Information, type the name of your e-mail server that you determined in step 1 in the Outgoing mail server (SMTP) box, and then click Next.
 * 7) Click Finish.



MORE INFORMATION
Some ISPs block the SMTP port 25. This configuration helps prevent unsolicited e-mail messages. To determine if port 25 is blocked, try a Telnet session to the SMTP port on your e-mail server.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

For additional information about how to connect Outlook to your Outgoing (SMTP) E-mail Server, click the following article numbers to view the articles in the Microsoft Knowledge Base:

302357 OL: Error message: Outlook is unable to connect to your outgoing (SMTP) e-mail server

310887 Cannot send third-party mail by using EarthLink dial-up networking and Outlook Express

296161 OL98: Error message: the message could not be sent because it rejected you as the sender. Server response '550', Access Denied 0x800CCC78

Additional query words: port 25 filtering relay blocking OL2002

Keywords: kbpending kberrmsg kbprb KB836562

Technology: kbOutlook2002 kbOutlook2002Search kbOutlookSearch kbZNotKeyword3

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