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550 authentication problem

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by sunshine12b Mar 4, 2005 last reply Mar 4, 2005

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one of the users here continue to get a "550 please configure your mail cllient to use authentication" error upon sending e-mails. He says sometimes they go through and sometimes they don't. Why does this happen and what can be done to correct this issue"

Help!!

Thanks
Sunshine

2 replies

by sunshine12b Mar 4, 2005

Our system is Windows Server 2003 and exchange 2003.

by bfilmfan Mar 4, 2005

550 Authentication errors are usually caused by an ISP blocking non-ISP email.

Microsoft has a workaround for this issue, listed here:

http://support.microsoft.com/?kbid=827601

This discussion is closed to new replies.

2 replies

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