Consider the following scenario:
S/MIME in Outlook Web App (OWA) is enabled in a Microsoft Exchange Server 2010 SP1 environment.
A sender sends an encrypted or digitally-signed message to a recipient.
The recipient uses OWA to open the message and tries to print it.
The printer selection dialog box is displayed. The recipient selects the printer and presses the Print button.
In this scenario, the message is not printed. Additionally, if the recipient is using Internet Explorer 8 to sign in to OWA, the print window stops responding.
This issue occurs because the encrypted or digitally-signed message is not correctly rendered when S/MIME control is installed.
To resolve this issue, install the following update rollup:
2645995 Description of Update Rollup 1 for Exchange Server 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about Outlook Web App and S/MIME, visit the following Microsoft website:
General information about Outlook Web App and S/MIMEFor more information about Outlook Web App and S/MIME, visit the following Microsoft website:
General information about how to enable or disable S/MIME in Outlook Web App