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New certificate status is unknown on Exchange

Posted on 2011-09-29
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Last Modified: 2012-05-12
I just order a new certificate from Entrust for my exchange server and webmail to replace the expired one, I’m able to install and enabled for IMAP, POP, IIS and SMTP, but when I use outlook, it shows “The security certificate has expired or is not yet valid” and when I run Get- ExchangeCertificate it shows “Status : Unknown” on the new certificate.  It seems outlook still using the old cert. How can I change the status? Please help, thanks in advance.
Cert.jpg
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Question by:weikiiro
6 Comments
 
LVL 3

Expert Comment

by:lmovalles
ID: 36816310
this means that Unknown   Exchange is unable to determine the type of certificate that is installed.
Please validate the certuficates have the private keys.

http://technet.microsoft.com/en-us/library/bb124424.aspx

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LVL 20

Expert Comment

by:Satya Pathak
ID: 36816977
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Author Comment

by:weikiiro
ID: 36817225
SatyaPathak, I reinstall the intermediate cert, now status is valid. But outllok still link to the old cert, how can I force outllok to switch to new cert? Thank you.
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Nothing ever in the clear!

This technical paper will help you implement VMware’s VM encryption as well as implement Veeam encryption which together will achieve the nothing ever in the clear goal. If a bad guy steals VMs, backups or traffic they get nothing.

 
LVL 9

Expert Comment

by:ash007
ID: 36818558
Are u getting any popup  for certificate mismatch in Outlook
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Accepted Solution

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weikiiro earned 0 total points
ID: 36818638
I'm getting popup for certificate expried, outlook looks for my old cert.
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Author Closing Comment

by:weikiiro
ID: 37233434
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