EXCH2007 - can I switch off all certificates

Hi Experts,
I have EXCH2007 running in a cluster.
Two HUBs also installed on other servers.
Now I have strange cert warnings and errors and all users complain about pop ups because of CERT warning.

Question:
Is it possible to delete all certificates around Exch2007 and all Outlook clients ?
If yes, can you show me how ?
Eprs_AdminSystem ArchitectAsked:
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Will SzymkowskiSenior Solution ArchitectCommented:
Outlook certificate warnings or errors are due to mismatched names that are present on the certificate itself and what you have configured for your virtual directories. If you have your certificate with external domain like mail.mycompany.com and your internal virtual directories are configured using servername.internaldomain.com then this is why you are getting a cert warning/error. You need to configure your virtual directories using the same name that is presented in the certificate in order to remove any of the warning.

Will.
Eprs_AdminSystem ArchitectAuthor Commented:
Ok I understand.
In my case it happens last night suddenly.
How can it be ?
Will SzymkowskiSenior Solution ArchitectCommented:
The first thing i would do is check what autodiscover is presenting to the user Outlook client.

- have the user open Outlook
- hold ctrl+right click the outlook icon in the system tray
- select Test Email Auto Configuration
- Run the autodiscover test

Make sure that the certificate DNS names are the same as the URL that autodiscover is presenting.

Will.

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Seth SimmonsSr. Systems AdministratorCommented:
In my case it happens last night suddenly.

check the date on the certificate(s)
make sure it didn't just expire
Eprs_AdminSystem ArchitectAuthor Commented:
one cert was expired but minimum over 2 month
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