Sending email error 451?

Since moving to U-Verse, when I send an email of more than 3 or 4 lines with Outlook Express or Outlook I receive the following error on Express and a similar error with Outlook: An unknown error has occurred. Subject 'A very happy new year', Account: '[email protected]', Server: '127.0.0.1', Protocol: SMTP, Server Response: '451 Invalid Smtp line - Should end with CRLF', Port: 5200, Secure(SSL): No, Server Error: 451, Error Number: 0x800CCC6A
Answer:

The email address is deleted or they blocked you

Stephen at Yahoo! Answers Visit the source

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Other answers

You may need to reconfigure outlook to use the U-verse email settings to work properly if you migrated the bellsouth email to U-verse. To do this you can go to this link in their support website to assist you. https://www.att.com/esupport/article.jsp?wtSlotClick=1-00475B-0-2&cv=812&sid=KB401573

U-verse

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