Encrypted mails sent from OWA with Windows 7

Encrypted emails sent from OWA with Windows 7 cannot not be read, getting the attached error message.

Environment: Exchange 2007
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Paul MacDonaldDirector, Information SystemsCommented:
So...what's the method the message is encrypted with?  I think the error message is pretty straightforward...
nourbenAuthor Commented:
Using Active Client / CAC card
nourbenAuthor Commented:

On all CAS servers:

Add EncryptionAlgorithms key (Reg_SZ) to HKLM\System\CurrentControlSet\Services\MSExchange OWA\SMIME

with value: 6603;6602:128;6602:64;6601;6602:56;6602:40

see: http://technet.microsoft.com/en-us/library/bb738151(EXCHG.80).aspx

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nourbenAuthor Commented:
Resolved my problem
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