X-MS-Exchange-Organization-BCC header isn't encoded correctly in Exchange Server 2019 and 2016

Symptoms

Consider the following scenario in Microsoft Exchange Server 2019 or Exchange Server 2016:

A user has Non-ASCII characters such as Japanese characters in the display name.
You create a journal rule to send a journal message to an external recipient.
You send an email and add the user in the BCC field.

In this scenario, the journal message's embedded message has the mail header X-MS-Exchange-Organization-BCC and its value contains Non-ASCII text.

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

To fix this issue, install one of the following updates:

For Exchange Server 2016, install the Cumulative Update 12 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016.

Learn about the terminology that Microsoft uses to describe software updates.

Keywords: encoded incorrecly, kb, kbfix, kbqfe, Non-ASCII, x-ms-exchange-organization-bcc, kbHotfixAuto, CI97291

Article Info