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CUOL-MISFlag for United States of America asked on

Undeliverable e-mail to one domain only. Getting the following error message:

Your message did not reach some or all of the intended recipients.
      Subject:  FW: Undeliverable e-mail
      Sent:     5/23/2008 9:30 AM
The following recipient(s) cannot be reached:
      ******@xxxxxxxxx.org on 5/23/2008 9:31 AM
            There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.
            <server.domain.local #5.5.0 smtp;530 authentication required for relay (#5.7.1)>


This is the return e-mail I am recieving when attemting to send a e-mail to an individual working for xxxxxxx company.
ExchangeEmail ServersWindows Server 2003

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ChiefIT

8/22/2022 - Mon
SOLUTION
cincojones

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CUOL-MIS

That's what I thought, but is there a way I can prove it? I already contacted their administrator, but he claims that the problem is mine as it is not even reaching their exchange server...
SOLUTION
cincojones

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