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Outlook Exchange Proxy Settings keep changing.

I am experiencing bit of a strange problem with my Exchange clients.

Remote users are configured to use mail.domain.com with msstd set to msstd:mail.domain.com but when these users connect to the LAN the msstd settings change to msstd:<mailserver> then when they are working remotely again they are unable to connect.

Any suggestions on how this can be fixed?
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DJMohr
Asked:
DJMohr
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1 Solution
 
Simon Butler (Sembee)ConsultantCommented:
That is being set by Autodiscover.

How are you setting the configuration for the clients? Are you allowing Autodiscover to do it, or do you configure Outlook manually? If the latter, then you need to do the former, which will mean changing the Outlook Anywhere configuration.

Set-OutlookProvider -identity EXPR -CertPrincipalname msstd:mail.example.com

Simon.
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DJMohrAuthor Commented:
Before I ran the command I ran Get-OutlookProvider and got this:

[PS] C:\Windows\system32>get-outlookprovider

Name                          Server                        CertPrincipalName             TTL
----                                 ------                               -----------------                     ---
EXCH                                                                                                              1
EXPR                                                                  msstd:<mailsrv>                1
WEB                                                                                                               1

Should the EXCH and WEB not have a value?
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Simon Butler (Sembee)ConsultantCommented:
No.
In most installations of Exchange the EXPR value isn't set - it is blank. You should either change yours to match the host name on the SSL certificate, or remove it:

Set-OutlookProvider -identity EXPR -Server $null

The only time I have changed the set-outlookprovider value is when a wildcard SSL certificate is in use.

Simon.
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DJMohrAuthor Commented:
Ok have changed it to match my SSL cert, will monitor
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