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a wrapper that encrypts or signs outgoing mail
License: GNU General Public License v2.0
This project forked from az143/kuvert
a wrapper that encrypts or signs outgoing mail
License: GNU General Public License v2.0
this is kuvert, a wrapper around sendmail or other MTAs that does gpg signing/signing+encrypting transparently, based on the content of your public keyring(s) and your preferences. how it works: ------------- you need to configure your MUA to submit mails to kuvert instead of directly. you configure kuvert either to present an SMTP server to your MUA, or you make your MUA to use kuvert_submit instead of executing /usr/sbin/sendmail. kuvert_submit will spool the mail in kuvert's queue iff there is a suitable configuration file. kuvert is the tool that takes care of mangling the email. it reads the queue periodically and handles emails in the queue: signing or encrypting the mail, then handing it over to /usr/lib/sendmail or an external SMTP server for transport. (why a queue? because i thought it might be useful to make sure that none of your emails leaves your system without kuvert handing it. you might be very paranoid, and kill kuvert whenever you leave your box (and remove the keyrings as well).) installation: ------------- on debian systems you simply install the kuvert package, construct a suitable .kuvert configuration file and off you go. an example config file is provided at /usr/share/doc/kuvert/examples/dot-kuvert. on other systems you need to do the following: you need perl perl 5.10+, gpg and some of non-core perl modules: MIME::Parser, Mail::Address, Net::SMTP 1.28 (in core but not new enough with some distributions), IO::Socket::SSL 2.007, Net::Server::Mail::ESMTP, File::Slurp, Proc::ProcessTable and Encode::Locale. optional: get linux-kernel keyutils package, the gpg-agent or some other passphrase cache of your choice. run make, make install DESTDIR=/ as root -> kuvert, kuvert_submit, the manpages and one helper module will be installed in /usr/bin, /usr/share/man/man1 and /usr/share/perl5/Net/Server/Mail/ESMTP/, respectively. configuration: -------------- read the manpages for kuvert(1) and kuvert_submit(1) and consult the example config file "dot-kuvert". you will need to create your own config file as ~/.kuvert. sorry, no autoconfig here: this step is too crucial for a mere robot to perform. then start kuvert and inject a testmail, look at the logs to check if everything works correctly. (historical note: kuvert came into existence in 1996 as pgpmail and was used only privately until 99, when it was extended and renamed to guard. some of my friends started using this software, and in 2001 it was finally re-christened kuvert, extended even further and debianized. in 2008 it received a major overhaul to also provide inbound smtp as submission mechanism, outbound smtp transport and better controllability via email addresses. until 2008 kuvert supported pgp2.x.) please report bugs to me, Alexander Zangerl, <[email protected]>. The original source can always be found at: http://www.snafu.priv.at/kuvert/ Copyright (C) 1999-2017 Alexander Zangerl This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License with the Debian GNU/Linux distribution in file /usr/share/common-licenses/GPL; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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