Outlook 2007 and Exchange 2007 Certificate issue

Author:

Yuval Sinay MVP

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SUMMARY

The following knowledgebase will help you to resolve issue Outlook 2007 and Exchange 2007 Certificate issue

SYMPTOMS

 
Using Outlook 2007 and Exchange 2007 server, may produce the following error :
 
autodiscover.yourdomainname.com
 
Information you exchange with this site cannot be viewed or changed by others.
 
However, there is problem with the site's security certificate.
 

CAUSE

 
If the Outlook 2007 client resides on a different subnet than the Exchange 2007 server,
and the router that connects from the subnet listen to TCP Port 443 (HTTPS), the auto discover
mode of Outlook 2007 and Exchange 2007 may fail due DNS name resolution issue or/and unavailable
socket on the router that can support SSL connection.
This failure occur due a certificate mismatch that Outlook 2007 try to use to create a
secure channel between the client to the server.
 

RESOLUTION

 
If you are using Cisco (For example) network equipment, you can disable the listen to TCP Port 443 (HTTPS)
 
by using the command:
 
"no ip http secure-server"
 
Its recommended to consulate the vendor documentation, before applying any new settings.
 
Also, use "NSLOOKUP" command, to verity correct DNS settings for the record:
 
autodiscover.yourdomainname.com
 

 
 
 

MORE INFORMATION

 
Microsoft Exchange Server 2007
 


Properties

Article ID: 555842 - Last Review: 14 Feb 2017 - Revision: 1

Microsoft Office Outlook 2007, Microsoft Exchange Server 2007 Standard Edition, Microsoft Exchange Server 2007 Enterprise Edition

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