[Dovecot] dovecot support ms-tnef mail parser?

Hello everybody, I used iRedMail Server with dovecot-1.2.0. I used OutLook2007 send a RTF mail and the mail can't be parsed normal.

In dovecot maildir storage the mail body appeared ,/ /

/------=_NextPart_000_0007_01CD52BC.99E1BE10 Content-Type: application/ms-tnef; name="winmail.dat" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="winmail.dat"/

How to parse ms-tnef mail by dovecot? Thank you.