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e-mail account does not exist rejection message

Peter_Cull
Peter_Cull asked
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Last Modified: 2010-04-07
When I email someone from the office using outlook 2003 and Exchange 2003 I get an mail rejection:
"The following recipient(s) could not be reached:
xxx@yyy.com on 18/07/2008 15:54
The e-mail account does not exist at the organization this message was sent to.  Check the e-mail address, or contact the recipient directly to find out the correct address."

Yet when I email the same address from Hotmail it works, message gets through.  Sent email 8 times with 8 rejections.

Restarted all exchange services, rebooted broadband router, and did an NSLOOKUP to verify we were talking to the recipient mail server IP address.

Does anyone have any idea how email from Hotmail gets through when this looks like a problem at the recipient mail server.  Is Exchange case sensitive or something?  Recipient mail server is also Exchange.

Email is from a director so it's important it gets through.

Thanks, Peter.
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Exchange is not case sensitive on usernames and email addresses.  Please verify that you have correctly spelled the email address right, as outlook 2003 will cache email addresses in a file .n2k.  It is possible that you have misspelled this email address once and outlook is still using the cached address.  What happens if you try from OWA?  you could also try closing out of outlook and renaming your N2K file so that outlook will create a new one and not use your old cache.  The N2K file is located under your root drive (C:\Documents And Settings\USERNAME\AppData\Roaming\Microsoft)

Author

Commented:
Hi,

Thanks for the info.  

- I've quadruple checked the email address and it is correct - even copied and pasted it from notepad.
- Emailed from three different email accounts with OWA and Outlook client.
- Emailed another address at the company, same rejection.  Copied and pasted it from their web site to be certain.
- Rebooted all my servers.

Assuming email addresses are correct.  Do you know of any reason why this error would be produced, other than the account not being set up at the recipient mail server.  I can't see how this message would be generated under any other circumstance.

Regards, Peter.
I have never seen this error for any other reason than the obvious, the account is not configured on that server.  It is possible that the recipients mailboxes are over their quota limit.  Can you have them send you an email and try to reply to it?

Author

Commented:
Good idea.  I'll email him from my hotmail account asking him to reply to my work email.  That will prove whether or not he's actually receiving mail.  Thanks.
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