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Re: [tor-talk] tordns incapable of MX lookups (was Basics of secure email platform)

To: tor-talk@xxxxxxxxxxxxxxxxxxxx
Subject: Re: [tor-talk] tordns incapable of MX lookups (was Basics of secure email platform)
From: Conrad Rockenhaus <conrad@xxxxxxxxxxxxxx>
Date: Sun, 24 Nov 2013 14:04:40 -0500
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Lunar,

If you have it laying around, I'm interested.  Would you mind
uploading it to GitHub or emailing it to me so I can upload it to
GitHub (credits to you of course.) so we can work on it some more.
Would rather use anything other than Windows.

I'm going to experiment with the Windows though, just to see if it
works or not.  I'll get y'all posted.

--Rock

On Sun, Nov 24, 2013 at 5:56 AM, Lunar <lunar@xxxxxxxxxxxxxx> wrote:
> tor@xxxxxxxxxxxxxxxxxx:
>> > >>   1) Create a list of tor exit nodes that do not block port 25
>> > >>   2) Command the tor daemon to exit those nodes exclusively.
>> > >SSL-SMTP configured to works over 465 port in most cases.
>> > On Windows Yes.
>> > SMTP over ssl/tls is configured on port 25. Starttls, aca
>> > submission, is configured for port 587
>>
>> You guys are getting hung up on the wrong thing.  Before talking ports
>> (which is a non-issue), realize that tordns cannot do an MX lookup.
>> This remains the biggest hurdle to sending mail.
>>
>> Postfix must run with a transparent proxy (no SOCKS proxy capability),
>> so it relies wholly on tordns for MX lookups.
>
> It is also possible to some advanced magic around Postfix to avoid that.
> The trick is to use a daemon, hooked up to Postfix using a tcp_table(5)
> as transport_maps. Then for each mail that Postfix wants to deliver,
> that daemon open up a new local port where traffic will be redirected
> through Tor to the SMTP server. Postfix is told to use that local
> address in order to deliver that particular email. Because that deamon
> will be the one doing the MX lookup, it can query a DNS over TCP over
> Tor to get the MX record.
>
> I might still have some Ruby code implementing that scheme lying around
> somewhere if anyone's interested. I was the first one amazed when it
> actually worked.
>
> --
> Lunar                                             <lunar@xxxxxxxxxxxxxx>
>
> --
> tor-talk mailing list - tor-talk@xxxxxxxxxxxxxxxxxxxx
> To unsubscribe or change other settings go to
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>



-- 
Conrad Rockenhaus

http://www.rockenhaus.com/
http://www.lagparty.org/~conradr/

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Follow-Ups:
- Re: [tor-talk] tordns incapable of MX lookups (was Basics of secure email platform)
  - From: Lunar

References:
- Re: [tor-talk] Basics of secure email platform
  - From: tor
- Re: [tor-talk] Basics of secure email platform
  - From: unknown
- Re: [tor-talk] Basics of secure email platform
  - From: Elrippo
- [tor-talk] tordns incapable of MX lookups (was Basics of secure email platform)
  - From: tor
- Re: [tor-talk] tordns incapable of MX lookups (was Basics of secure email platform)
  - From: Lunar

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