1. 16
    Setting up an MTA Behind Tor privacy github.com
    lattera avatar authored by lattera 3 months ago | cached | 3 comments

  1.  

  2. 2
    Famicoman avatar Famicoman 3 months ago | link

    Thanks for this write-up! I’d be curious to see just how many people are running MTA software as hidden services.

    1. 1
      myfreeweb avatar myfreeweb 3 months ago | link

      No mask-source in the listen directive? I wonder what client IP address gets added to Received headers…

      1. 1
        lattera avatar lattera edited 3 months ago | link

        The IP of the Tor-ified firewall:

        May  9 15:27:58 smtpd-01 smtpd[63268]: smtp-in: New session a2beaff0a42f673a from host 10.5.5.2 [10.5.5.2]
May  9 15:28:02 smtpd-01 smtpd[63268]: smtp-in: Started TLS on session a2beaff0a42f673a: version=TLSv1.2, cipher=ECDHE-RSA-AES256-GCM-SHA384, bits=256
May  9 15:28:07 smtpd-01 smtpd[63268]: smtp-in: Accepted message 32a60c1b on session a2beaff0a42f673a: from=<shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion>, to=<shawn@mdz2craqs4gvefg5wbgwvc5rovlvh6tmanzoraykznm2wdrk5xqtsdid.onion>, size=1342, ndest=1, proto=ESMTP
May  9 15:28:07 smtpd-01 smtpd[63268]: delivery: Ok for 32a60c1b3108639f: from=<shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion>, to=<shawn@mdz2craqs4gvefg5wbgwvc5rovlvh6tmanzoraykznm2wdrk5xqtsdid.onion>, user=shawn, method=maildir, delay=2s, stat=Delivered
May  9 15:28:18 smtpd-01 smtpd[63268]: smtp-in: Closing session a2beaff0a42f673a

        So, everything’s still 100% anonymous.

        edit[0]: Here’s what the raw email looks like, with all the headers:

        Return-Path: <shawn@mdz2craqs4gvefg5wbgwvc5rovlvh6tmanzoraykznm2wdrk5xqtsdid.onion>
Delivered-To: shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion
Received: from smtpd-01 (192.168.254.2 [192.168.254.2])
	by tormail-01 (OpenSMTPD) with ESMTP id ce94b548
	for <shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion>;
	Wed, 9 May 2018 11:28:17 -0400 (EDT)
Received: from localhost (smtpd-01 [local])
	by smtpd-01 (OpenSMTPD) with ESMTPA id 69a12445
	for <shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion>;
	Wed, 9 May 2018 15:27:21 +0000 (UTC)
Date: Wed, 9 May 2018 15:27:20 +0000
From: Shawn Webb <shawn@mdz2craqs4gvefg5wbgwvc5rovlvh6tmanzoraykznm2wdrk5xqtsdid.onion>
To: shawn@3w2s7tpb5mc7ubsjjnzp4oxvqupjeoywzwdxfvfnjn3toqbuzgkn7kqd.onion
Subject: Test of work MTA 01
Message-ID: <20180509152720.thmkyagug6xk565o@smtpd-01>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: NeoMutt/20180323

This is a test of my work MTA 01.