Comment indiquer qu'un domaine ne reçoit jamais de courrier ? Jusqu'à présent, il n'existait pas de mécanisme standard, permettant d'indiquer aux clients de ne pas perdre de temps à essayer d'écrire. Ce nouveau RFC indique une méthode, le « MX nul » qui consiste à mettre un point en partie droite de l'enregistrement MX.
Eléments de langage d'Urvoas
I’m in the process of moving back to a postfix/dovecot setup for hosting my own mail and I wanted a way to remove the more sensitive email headers that are normally generated when I send mail. My goal is to hide the originating IP address of my mail as well as my mail client type and version.
Take back control of your email with this easy-to-deploy mail server in a box.
Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom.[...]
The box also includes automatic DNS configuration, spam filtering, greylisting, static website hosting, and easy SSL certificate installation.
It implements modern mail protocols (SPF, DKIM, and DMARC) and the latest security best practices, including opportunistic TLS, strong ciphers, and HSTS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection against active attacks. Exchange ActiveSync is also available as a beta feature.
Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up.
What’s inside the box?
Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization.
Nous nous permettons de republier cet article paru sur le site de Riseup. La Fédération FDN y apporte son soutien. Il s'agit de la criminalisation des pratiques de protection/sécurité de Riseup, dans le cadre d'une enquête judiciaire en Espagne.
This page compares regular expressions that validate e-mail addresses in order to find the best one. (via http://porneia.free.fr/pub/links/ )
Many aspects of email are a lot older than you may think. There were quite a few people in the early 1970s working out how to provide useful services using ARPANET, the network that evolved over the next 10 or 15 years into the modern Internet.
Mass electronic surveillance by governments revealed over the last year has spurred a new movement to re-decentralize the web, that is, to empower netizens to be their own service providers again. SMTP, the protocol of email, is decentralized in principle but highly centralized in practice due to the high cost of implementing all of the modern protocols that surround it. As a result, most individuals trade their independence for access to a “free” email service. Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
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Edit:
Mail-in-a-Box only supports being installed on Ubuntu 14.04
cf https://github.com/JoshData/mailinabox/blob/master/scripts/start.sh
=> rm -rf
Mutt Offlineimap msmtp
Bible mutt mail unix
OpenSMTPD est un service SMTP libre utilisant le-dit protocole comme défini dans la RFC 5321. Il permet d'échanger des e-mails avec d'autres systèmes utilisant ce protocole comme Sendmail, Postfix, Exchange, etc.
P2P Email-Client based on library of Spot-on with Echo Protocol.
Secure P2P Email from Friend to Friend without relying on a central server.
Key- / Repleo-Exchange.
Full decentral Email-Network using the Echo Protocol.
Store Email for Offline-Friends in the P2P Network.
Chat and Instant Messaging is build in. Define & Add your friends.
Strong e2e Multi-Encryption (PGP-kind/AES over SSL: using libgcrypt).
Libspoton Integration.
Additional Security Layer with the GB-Feature for Emails.
Preventing Data Retention (VDS). WoT-less.
HTTP & HTTPS Connections.
Open Source. BSD License for the SPOT-ON Kernel and GPL2 for the GUI and IMAP Part.
Cassiopeia is the tortoise of Momo, which can communicate through writing on her shell and guides into the future. - Wikipedia.
Ajouter une entrée SPF
Il vous faut simplement éditer vos zones DNS chez votre registrar, pour y ajouter une entrée de type TXT. L'instruction pour la cas décrit précédemment est :
v=spf1 a mx ip4:
Paramètres :
spf1 : la version de SPF
a : s'applique au A-record courant
mx : s'applique à l'entre MX courante
ip4<IP> : n'accepte que l'IP spécifiée (IP du serveur)
-all : refuse tous les autres
Some time ago, I got tired of various bugs and the general slowness of thunderbird, and decided to try to go back to a more sensible setup. I’m a big CLI user, and trying mutt again made sense, even if my first experience with it two years ago had been inconclusive, I decided to do things right this time.
After some research, I concluded what I did wrong last time was to give to much responsibility to mutt itself, and that I should use it only for what it’s good at, displaying mails. So I went on to complete the various pieces of the puzzle.
Des dizaines de milliers de mails, des documents confidentiels, des carnets d'adresses, des agendas, des correspondances professionnelles mais aussi privées... Le Parlement européen va devoir changer radicalement son système de sécurisation des messageries de l’ensemble des députés européens. Car la démonstration vient d'être faite, par un hacker, de la fragilité de la sécurité des serveurs de mails au sein du Parlement.
http://bluetouff.com/2013/11/21/securite-lapres-snowden-vu-du-smartphone-dun-eurodepute/
https://www.pcinpact.com/news/84541-donnees-perso-mauvaise-histoire-belge-l-eurodepute-louis-miche.htm
DNS et Mail
http://www.fdn.fr/media/video/Cours/Formation-Mail_et_DNS.ogv
http://www.fdn.fr/IMG/pdf/Netcamp-dns-bayart-nancy-151011.pdf
Radius (plus orienté FAI asso)
http://www.fdn.fr/media/video/Cours/Formation-RADIUS.m4v
Très abordable.
Ubuntu + Postfix + Courier IMAP + MySQL + Amavisd-new + SpamAssassin + ClamAV + SASL + TLS + Roundcube + Postgrey
Easy to follow howto on setting up a mail server with unlimited users and domains, with IMAP/Pop access, anti-spam, anti-virus, secure authentication, encrypted traffic, web mail interface and more.
Based on an Ubuntu distribution platform, but instructions are distro generic. Examples are run on Amazon AWS ec2, but only for demonstration purposes.
scramble
Secure email for everyone
Scramble is easy-to-use, open source encrypted email.
Scramble has not been widely vetted, so don't rely on it to protect you just yet.
However, we have a working prototype. Feel free to try it out!
You are interested in learning all the basics about running your own mail server using Debian Squeeze? Be my guest. All you need is a computer running Debian (Squeeze) and an internet connection. This tutorial explains step-by-step how to set up such a server and give you lots of background information in the process. Depending on the internet connection and server hardware you will be able to run a reliable mail service for thousands of domains and users. Soon you will be proud operator of a mail server that can:
receive and store email for your users from other mail servers on the internet
let your users retrieve the email through IMAP and POP3 - even using SSL-encrypted connections
receive and forward ("relay") email for your users using SMTP authentication
offer a webmail interface to read emails in a web browser
detect most spam emails and filter them out or tag them
Un autre projet de système mail. Cette fois, P2P, chiffrement.
The most used email systems rely on a central server that receives, stores and forward the messages.
The recent news about PRISM and the closure of Lavabit shown that users cannot rely on such systems for private communications and for an uninterrupted service.
When a central server is involved in the communication then it’s easy to identify the parties that have to be searched, closed down or threatened in order to retrieve the messages that are sent through the network.
FlowingMail is the name of a new decentralized messaging protocol, while FlowingMail Client is an email client that uses the protocol.
The protocol is loosely based on BitTorrent, with some ideas coming from the BitMessage protocol.
The FlowingMail messages are signed and encrypted by the sender: only the receiver is able to decrypt the messages.
Messages and public keys are announced using a variant of the Kademlia DHT, while the encrypted emails are transferred in way similar to the BitTorrent fashion.
All the communications happen over the UDT protocol (UDP based data transfer), which offer high speed for data transfer and partial reliability on point-to-point messages.