In Microsoft Exchange Server 2013 Cumulative Update 6 (CU6), if you call the Message-class SaveChanges method on a property that does not define the preferred (best) body format, and if the message body is too large, the process fails and returns the following error message:
This problem occurs only when you use an Outlook profile in online mode.
For example, a best body format that is defined by the PR_NATIVE_BODY_INFO property is set to "HtmlBody (0x03)." This setting corresponds to the PR_HTML property of the message body. If a request is then made to change the PR_RTF_COMPRESSED property, the request to save the changes fails if the message body is too large.
Note This is a known problem that affects Symantec Enterprise Vault. In this case, the plain text body updates correctly. However, the RTF body returns the MAPI_E_NOT_FOUND error message.
MAPI_E_NOT_FOUND
For example, a best body format that is defined by the PR_NATIVE_BODY_INFO property is set to "HtmlBody (0x03)." This setting corresponds to the PR_HTML property of the message body. If a request is then made to change the PR_RTF_COMPRESSED property, the request to save the changes fails if the message body is too large.
Note This is a known problem that affects Symantec Enterprise Vault. In this case, the plain text body updates correctly. However, the RTF body returns the MAPI_E_NOT_FOUND error message.