pfqueue should be able to decode the From: and Subject: headers.
Currently, I'm seeing:
│Message: 3h3Sch4y3KzCsxy │
│From..: "C. Welker" iolite@atoz-cro.de │
│To....: "wolfram.wermke@charite.de" wolfram.wermke@charite.de │
│Subj..: =?utf-8?b?SWNoIGJpbiB3aWUgZWluZSBGZWRlciBvaG5lIFdpbmQ=?= │
│Status: Held │
Ich bin wie eine Feder ohne Wind