libktnef4-dbgsym 4:4.14.10-1ubuntu2 (amd64 binary) in ubuntu yakkety

 Ktnef is a library for handling data in the TNEF format (Transport Neutral
 Encapsulation Format, a proprietary format of e-mail attachment used by
 Microsoft Outlook and Microsoft Exchange Server). The API permits access
 to the actual attachments, the message properties (TNEF/MAPI), and allows
 one to view/extract message formatted text in Rich Text Format.
 .
 This package is part of the KDE Development Platform PIM libraries module.