[otrs] OTRS and PGP/MIME

Hi, this may sound like a stupid question, but does OTRS support PGP/MIME out of the box? We've encountered the use case that tickets sent by GPGTools users (Apple) with PGP/MIME don't get decrypted by OTRS. Instead, we get an empty message with two encrypted attachments. The syslog logs a notice event "Totally empty attachment part (1)". In order to read the message, we need to export the "encrypted.asc" file from OTRS and decrypt it locally, which is quite cumbersome. When googling for the issue, nothing really comes up. Is there anything crucial we're missing? We're running OTRS::ITSM 4.0.13 on Ubuntu. -- C ya /Walter