[tor-bugs] #6451 [TorBirdy]: add proxy / tor connectivity check / mail header check (was: add proxy / tor connectivity check)

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#6451: add proxy / tor connectivity check / mail header check
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 Reporter:  proper       |          Owner:  ioerror
     Type:  enhancement  |         Status:  new    
 Priority:  normal       |      Milestone:         
Component:  TorBirdy     |        Version:         
 Keywords:               |         Parent:         
   Points:               |   Actualpoints:         
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Changes (by tagnaq):

  * type:  defect => enhancement


Comment:

 write a mail header verifier-bot (SMTP check)
 use case #1
 (this is more or less a setup and test once use case)

 a user installed torbirdy in his thunderbird and wants to verify that
 everything
 is setup correctly.
 the user sends an email to torbirdy-check at ...
 with his thunderbird and gets an auto-reply which contains
 the result of an automated header analysis:

 Content-Type: pass
 *Date: pass (a hard one)
 *Message-ID: pass
 EHLO argument: pass
 source IP address (exit node): pass
 (optional) Enigmail/GPG: pass

 - gpg sign the answer
 - return only PASS if all checks are passed successfully.


 *) upcoming feature

 I could even immagine the following:
 tor-* subscriber is using torbirdy and wants to know when his outgoing
 email headers seem to leak something / don't look like torbiry's header,
 he subscribes
 to 'inspect my mail headers for privacy leaks' - service.
 torbirdy-check at ... is subscribed to tor-*
 and automatically inspects all emails from the service subscribers and
 sends out alerts
 as soon as it detected something fishy.

 such a mail bot could even be used for automated regression testing.


 The check is SMTP specific but there is no possibility that one can
 configure separate proxies for SMTP and POP3,
 so I'm pretty confident that one uses POP3 over Tor if he used SMTP over
 Tor (default Thunderbird+TorBirdy setup).

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/6451#comment:1>
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