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Exchange 2013 Outlook anywhere takes a long time to connect

Posted on 2014-08-06
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Last Modified: 2014-08-26
He have recently upgraded to Exchange 2013 moving from 2007, all users have now been migrated and everything seems to be running ok internally.

Outlook anywhere however is taking an age to connect to the server from users outside the network.

Some users cannot connect but that may be a different issue.

Everything seems to be setup correctly and I tested with Microsoft Remote Connectivity Analyzer which it passed.

With Exchange 2007 it used to be pretty instant.

I cant see any reason for it so would like some help in case there is something ive overlooked.

Cheers.
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Question by:robquartzelec
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LVL 20

Expert Comment

by:wolfcamel
ID: 40243159
is there a lot of new synching traffic going on that could be perhaps slowing down the external link?
If it is working then I would suggest it is configured OK,
the dns lookup can represent a chunk of the connection time and a hosts file entry will help you see if this is a cause.
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Author Comment

by:robquartzelec
ID: 40243310
Hi,

Thanks for your response, changing the host file made no difference, still took just as long.

Looking at our connection its not showing heavy usage so I don't think its that.

in Outlook connection status is shows about 6 connections which are 'connecting' very slowly they each one turns to 'established'
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Author Comment

by:robquartzelec
ID: 40243339
This is what it looks like eventually when they have all connected which took about 10 minutes, does all this look as it should?
outlok-con-status.png
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LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 40244855
Outlook Anywhere works on the basis that Outlook attempts to connect to the Exchange server's real address (as shown in the server configuration), if that fails then it falls back to Outlook Anywhere host name.
The delay you are seeing would suggest that the host name of the Exchange server resolves on the internet and it has to time out before it connects on Outlook Anywhere.
As each user has a unique endpoint within Outlook for their server, that can only mean you have a wildcard in your domain and the internal and external domains are the same. Remove the wildcard and see if that improves matters.

Simon.
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Author Comment

by:robquartzelec
ID: 40245575
Simon, We don't have any wildcard in place. Our internal and external exchange addresses are the same however mail.ourname.com

We have an additional internal forward lookup zone for our outside domain so that the name is resolved inside due to not being able to have internal names on the certificate anymore.

Thats how I understood it should be setup is that correct?
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LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 40246368
Internal and external name should be the same in most cases, with split DNS being used.
However the server's REAL name should not be the same, so hopefully your Exchange server is not called "mail".

You need to check on one of the external clients that the name resolves correctly to begin with. Then use the Connection Status dialogue to see what Outlook is doing when it is failing to connect. That could give you an idea where the problem is.

Simon.
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Author Comment

by:robquartzelec
ID: 40260411
Hi,

Nope our server name is not mail.

The name resolves correctly on the external client, and they can access the OWA site with the same address.

In the connection status is just says connecting for ages then one by one they say established.

Most users will connect after a long period some struggle to at all and others it will cycle through being connected then not then connected again even on a stable broadband connection from there home.

Any other ideas on what to check?

Cheers.
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LVL 63

Expert Comment

by:Simon Butler (Sembee)
ID: 40261094
Does the server's REAL name resolve on the internet at all?

Simon.
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Author Comment

by:robquartzelec
ID: 40267131
No the server name does not resolve.
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Accepted Solution

by:
robquartzelec earned 0 total points
ID: 40276476
This has been resolved, we found that SSL Offloading had been enabled in error. Once this had been disabled it now connects instantly.

Some users which have additional mailboxes where prompted for username and password however and removing then re adding them cleared this.
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Author Closing Comment

by:robquartzelec
ID: 40285218
We found the setting which was causing the issues.
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