Open Outlook Express
Click On Tools
Click On Accounts
Make sure the email account you are having trouble with is highlighted
Click On Properties
Click On Servers Tab
Make sure "my server requires authentication" is enabled
Click Apply then Click OK


"addumie" wrote in message
...
| I cannot send email because I get the following error:
| The message could not be sent because the server rejected the sender's
| e-mail address. The sender's e-mail address was '.
| Subject '', Account: 'incoming.verizon.net', Server:
'outgoing.verizon.net',
| Protocol: SMTP, Server Response: '550 5.7.1 Authentication Required',
Port:
| 25, Secure(SSL): No, Server Error: 550, Error Number: 0x800CCC78
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