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IMAP Configuration - No Server Unavailable 15

Posted on 2014-09-03
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Last Modified: 2016-06-13
Hi,

I have exchange 2013 2 server's all in one role with DAG configured. I have a issue in configuring IMAP in outlook. Tried in 2007/2010/2013 outlook clients. While creating the account everything is fine in outlook, but when opening outlook, it just hangs and some time getting error unable to expand folders.

below error seen in exchange server


Task 'Synchronizing subscribed folders for eadmin@test.com.' reported error (0x8004DF00) : 'Outlook cannot synchronize subscribed folders for eadmin@test.com. Error: The server responded: 'Server Unavailable. 15'. If you continue to receive this message, contact your server administrator or Internet service provider (ISP).'
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Question by:kolathaya123
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Author Comment

by:kolathaya123
ID: 40302817
attached error screen shot
imap.JPG
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Expert Comment

by:Zacharia Kurian
ID: 40303132
Please Try  the followings;
A:

File > Account Settings > Select your IMAP account > Change > adjust the "Mail to keep offline" to "All", then check the result. If it works then follow the below ones.

B:
1) Go into the account settings of IMAP account. (Select the Email Account and go onto "Change...")
2) Then choose manual setup of the servers
3) Here go the last tab on the right, where you can also find the port configuration for the server (e.g. SSL,...)
4) here you will find the path to the IMAP folder empty
5) enter in this field "INBOX"
6) finish wizard.

Also it worth looking at the site below;

http://blogs.office.com/2012/10/18/the-new-imap-in-outlook-2013/
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Author Comment

by:kolathaya123
ID: 40303290
No, still same. I am trying from outlook 2010
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Author Comment

by:kolathaya123
ID: 40308241
I can see the IMAP health showing unhealthy for some services. Pls find attached. How to resolve the issue
imap1.JPG
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Expert Comment

by:Zacharia Kurian
ID: 40308325
did you try restarting the services and checked the IMAP health?

It is possible that your Autodiscover is not returning the correct settings.

Also In exchange 2013 you can't connect outlook direcly without a proxy server. You must use outlook anywhere and  it is default on in exchange 2013.
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Accepted Solution

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kolathaya123 earned 0 total points
ID: 40311265
I resolved the issue.

"The SSL certificate binding done for "Exchange Backend" website is local SSL" I did 3rd party ssl binding to this website and it started working fine.

But before this binding as with 3rd party ssl itself, but we have some issue in outlook connectivity and MS support changed this to local certificate

thanks
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