Consider the following scenario:
You create a disclaimer transport rule in an environment that has Update Rollup 1 for Microsoft Exchange Server 2010 Service Pack 3 (SP3) installed.
The transport rule is applied to all messages, and appends some text to email messages.
The disclaimer transport rule tries to apply the disclaimer to an HTML-formatted message.
In this scenario, the HTML-formatted message cannot be delivered to recipients, and the EdgeTransport.exe process crashes on the Hub Transport server. Additionally, the following event is logged in the Application log:
This issue occurs because the message body and the disclaimer text use the same character encoding. This causes an issue in which a null charset parameter is called in the character encoding.
To resolve this issue, install the following update rollup:
2866475 Description of Update Rollup 2 for Exchange Server 2010 SP3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about a similar issue, click the following article number to view the article in the Microsoft Knowledge Base:
2870028 EdgeTransport.exe crashes when an email message without a sender address is sent to an Exchange Server 2010 Hub Transport server
For more information about the character encoding, go to the following Microsoft website:
White Paper: Message FormattingFor more information about how to configure a disclaimer, go to the following Microsoft website: