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05.21.2008 at 08:44AM PDT, ID: 23421317
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9.6

Exchange 2003 IMAP connection refused for one user only

Asked by NoDough in Email Servers, Exchange Email Server, Internet Message Access Protocol (IMAP)

Tags: , , ,

It's going to be difficult to remember everything I've tried, but I'll do my best.

My Exchange 2003 server accepts IMAP connections.  This accommodates unified communications with our phone systems which send voice mails as WAV files via SMTP, then connect via IMAP to check the status of those messages.  The client computers use Outlook over MAPI for their email client.

This is working for all but one user and I have been unable to determine why that one user is refused an IMAP connection.

In ADU&C the user's Exchange Features are all "Enabled".  In Service Manager the IMAP4 Virtual Server does not limit the number of connections nor does it limit connections from IP addresses.  NTLM authentication is enabled as is Basic authentication.

I've attempted IMAP connections for this user from the phone system, from Outlook, and from Thunderbird.  All have the same result; the connection is refused.

The user's login name is "johns".  The user object name is "John Smith".  I've tried a variety of combinations including "johns", "mydomain/johns", "mydomain/johns/John Smith", and several others that don't come immediately to mind.  I've had success connecting to IMAP with several of these types of combinations as other users.

Anyone have any idea what could be causing this?  Is there an IMAP log on the Exchange server somewhere that will tell me why the connection is refused?

Thanks in advance,
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[+][-]05.21.2008 at 05:59PM PDT, ID: 21620168

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About this solution

Zones: Email Servers, Exchange Email Server, Internet Message Access Protocol (IMAP)
Tags: Exchange, Microsoft, 2003, IMAP
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Solution Provided By: kieran_b
Participating Experts: 1
Solution Grade: A
 
 
 
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