these are, briefly, the steps I have followed to get some S/MIME support in KMail 3.3.
Wipe out all not needed packages: # aptitude purge newpg gpgsm cryptplug cryptplug-dev libgpgme6 libgpgme-dev libksba0 Use packages provided by Matthias Urlichs <[EMAIL PROTECTED]>: # echo "deb http://smurf.noris.de/code/debian/ experimental smurf" \ >>/etc/apt/sources.list Install required packages # apt-get update && apt-get install gnupg2 gnupg-agent dirmngr NOTE 1: gnupg2 will *NOT* substitute your gpg command, it will just provide /usr/bin/gpg2, which you needn't use, and some other commands that the programs will use internally. NOTE 2: the gnupg-agent package from smurf does NOT provide /etc/X11/Xsession.d/90*gpg-agent. NOTE 3: gnupg2 1.9.10+cvs-1 contains /usr/share/locale/locale.alias, which is also in the locales package. you'll need dpkg --force-overwrite. ===> RECOMPILE gpgme0.4 <=== This is the sole cause for the error "this GPGME version was compiled without S/MIME support. Now it will because of gnupg2 installed: # apt-get source gpgme0.4 && cd gpgme0.4-0.9.0 # debuild && dpkg -i ../libgpgme11_0.9.0-1_i386.deb You should now see funky things in KMail -> Settings -> Configure KMail -> Security -> Crypto Backends -> Configure. I found this page useful: http://jdurand.home.cern.ch/jdurand/cern_ca_and_mail/ Kleopatra now works and KMail seems able to verify S/MIME messages. DISCLAIMER: I claim no deep knowledge of all of the above explained. -- Adeodato Simó EM: asp16 [ykwim] alu.ua.es | PK: DA6AE621 To be nobody but yourself in a world which is doing its best night and day to make you like everybody else means to fight the hardest battle any human being can fight and never stop fighting. -- e.e. cummings