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Leap SMTP Relay
===============
Outgoing mail workflow:
* LEAP client runs a thin SMTP proxy on the user's device, bound to
localhost.
* User's MUA is configured outgoing SMTP to localhost
* When SMTP proxy receives an email from MUA
* SMTP proxy queries Key Manager for the user's private key and public
keys of all recipients
* Message is signed by sender and encrypted to recipients.
* If recipient's key is missing, email goes out in cleartext (unless
user has configured option to send only encrypted email)
* Finally, message is relayed to provider's SMTP relay
Dependencies
------------
Leap SMTP Relay depends on the following python libraries:
* Twisted 12.3.0 [1]
* zope.interface 4.0.3 [2]
[1] http://pypi.python.org/pypi/Twisted/12.3.0
[2] http://pypi.python.org/pypi/zope.interface/4.0.3
How to run
----------
To launch the SMTP relay, run the following command:
twistd -y smtprelay.tac
Running tests
-------------
Tests are run using Twisted's Trial API, like this:
trial leap.email.smtp.tests
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