Strange characters that appear in the text of a reply e-mail in Outlook can be caused by the use of incorrect e-mail encoding, AutoFormat settings in Word, incorrect text formatting or a corrupted Outlook profile. This text appears between the body of the previous message and the next signature of the message where these titles are normally displayed. When you reply to a message, the From, Sent, To, CC and Subject fields of the message are replaced by a text like this: When Exchange 2010 SP1 adds the HTML disclaimer, it re-encodes the message, resulting in an incorrect message because it reads the wrong character set information. The problem is that the email has a character encoding in the META tag of the character set that is different from the character encoding in the MIME part, and an HTML warning has been added. Users receive e-mails in Chinese characters when the original e-mail has been sent in plain text. Update: Stop getting error messages and slow down your system with our optimization tool. Blocking foreign emails (with Chinese characters) in Outlook.