Hi Daniel, If CRL not update in time might have caused the revoked certificate not to be found, and continue to use. But it is likely to cause the security issue during transfer of data. The detail about CRL you can refer to the following link. How Certificate Revocation Works: http://technet.microsoft.com/en-us/library/ee619754(v=ws.10).aspx Wendy

Let´s assume that the Windows CA i malfuntioning, resulting in that it does not produce an updated CRL. In this scenario the xchange Server server / Outlook client can´t check the CRL specified in CDP. What will happen to the Exchange/Outlook ecosystem without an updated CRL? Links to documentation on this topic would be splendid. Regards, Danielwww.twitter.com/danielullmark

Hi Daniel, If CRL not update in time might have caused the revoked certificate not to be found, and continue to use. But it is likely to cause the security issue during transfer of data. The detail about CRL you can refer to the following link. How Certificate Revocation Works: http://technet.microsoft.com/en-us/library/ee619754(v=ws.10).aspx Wendy