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Message could not be sent. Server rejected sender's email address

This occured repeatedly since I started using Att connection. I spent days to fix it. I removed and added account, but it's not helping.

The message could not be sent because the server rejected the sender's e-mail address. The sender's e-mail address was 'reshet2000@att.net'. Subject 'The Little Red Hen', Account: 'pop.att.yahoo.com', Server: 'smtp.att.yahoo.com', Protocol: SMTP, Server Response: '530 authentication required - for help go to http://help.yahoo.com/help/us/sbc/dsl/mail/pop/pop-11.html', Port: 25, Secure(SSL): No, Server Error: 530, Error Number: 0x800CCC78

Your server has unexpectedly terminated the connection. Possible causes for this include server problems, network problems, or a long period of inactivity. Account: 'pop.att.yahoo.com', Server: 'smtp.att.yahoo.com', Protocol: SMTP, Port: 25, Secure(SSL): No, Error Number: 0x800CCC0F

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  • hosko Apr 02, 2009

    TRying to contact someone on Craig's list and when e-mail through contact e-mail keep getting server error 530.

  • Prasanna Udayasiri Aug 10, 2013

    Authenticating on server... Authentication stage error: Error: Server returned unrecognized reply

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The message could not be sent because it rejected as the sender

Posted on Aug 18, 2010

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Authenticating on server...
Authentication stage error: Error: Server returned unrecognized reply

Posted on Aug 10, 2013

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Posted on Jan 02, 2017

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I hope this helps and good luck! If my answer was helpful, please rate it "4 thumbs up" Thanks!

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