You are right. If you look at smime.c you will see that Mutt desperatly needs either smime-type or (to satisfy Netscape 4.x mailers) a Content-Description.
As s/mime is in development, we all have to wait or find some workarounds for it. See my mail from 18-09-02 for my current solution. I'm sure we have to discuss this further in private or join the mutt-dev list. BTW: the right way of figuring out if we have an "enveloped-data" or "signed-data" would be to look into the data itself (I was told). You can do this by: openssl smime -pk7out -in mail.msg | openssl asn1parse -dump Timo T. Rajala [2002-09-20 14:18]: > * Timo T. Rajala <[EMAIL PROTECTED]> writes: > > One difference is that the "smime-type=enveloped-data;" row is missing > > from the MS mail. I inserted this row in the MS mail and opened the > > mail in mutt: now both signature check and decrypt works. > > > > My question is: Is the MS MUA not following the S/MIME standard by > > omitting this row or is mutt wrong by not being able to handle it > > without this row? > > So this MS MUA SHOULD include "smime-type", but is not and mutt should > be able to determine the MIME type from the file extension but is not. -- Alex Pleiner zeitform Internet Dienste Fraunhoferstrasse 5 64283 Darmstadt, Germany http://www.zeitform.de Tel.: +49 (0)6151 155-635 mailto:[EMAIL PROTECTED] Fax: +49 (0)6151 155-634 GnuPG/PGP Key-ID: 0x613C21EA