I have to correct myself.
The PGP Inline encrypted Content is indeed decrypted but attached as an
attachment "encrypted".
The sender uses Totemo_TrustMail_(Notification)
The original message content is like this:
------=_Part_34700_1880177232.1629388338865
Content-Type: multipart/encrypted; protocol="application/pgp-encrypted";
boundary="----=_Part_34699_875602842.1629388338865"
------=_Part_34699_875602842.1629388338865
Content-Type: application/pgp-encrypted
Content-Transfer-Encoding: 7bit
Version: 1
------=_Part_34699_875602842.1629388338865
Content-Type: application/octet-stream; name=encrypted.asc
Content-Transfer-Encoding: 7bit
Content-Disposition: inline; filename="encrypted.asc"
-----BEGIN PGP MESSAGE-----
Version: OpenPGP totemomail
Comment: totemomail OpenPGP - http://www.totemo.com
hQIOAxnCqmWiKwVUEAgA1W13kwTcI2vAlZbGF+Dss1MD/99eQLDcKIXcrq4XSiUx
DRtX7jdsoVuARJxmqUVqJzRhkOsFj7WTK+7lCj+IL3SG/wges0Oqc/kpXcOc5423
...
I never dealt with PGP Inline before but i would expect that the decrypted
"Inline" content is inserted right in the message instead of beieng attach as
an attachment.
Regards
Wilson