libktnef1-dev 4:3.5.6-0ubuntu2 (ia64 binary) in ubuntu feisty

 This library handles mail attachments using the TNEF format. These
 attachments are usually found in mails coming from Microsoft mail
 servers and embed the mail properties as well as the actual
 attachments.
 .
 This is the development package which contains the headers for the
 ktnef library.
 .
 This package is part of the official KDE pim module.