Leap.mx

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Bugfixes
~~~~~~~~
- Returns doc as None if we have some error during the encryption

Misc
~~~~~~~~
- Packaging changes: add systemd script.

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Bugfixes
~~~~~~~~
- `7961 <https://leap.se/code/issues/7961>`_: Deleted account crashes leap-mx

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Features
~~~~~~~~
- `4285 <https://leap.se/code/issues/4285>`_: Add postfix lookup against couchdb for client smtp fingerprint
- `5959 <https://leap.se/code/issues/5959>`_: Make alias resolver to return *uuiddeliver.local*
- `7998 <https://leap.se/code/issues/7998>`_: Bounce stalled emails after a timeout.

Bugfixes
~~~~~~~~
- `7253 <https://leap.se/code/issues/7253>`_: Use the original message for encryption.
- `7961 <https://leap.se/code/issues/7961>`_: Check if the account is enabled.

Misc
~~~~
- `7271 <https://leap.se/code/issues/7271>`_: Document the return codes of the TCP maps.

o Add PGP key lookup on access check server and reject mail if no PGP key
was found for the user. Closes 6795.
o Fix bounce message recipient. Closes 6854.
o Implement bouncing as per RFCs 6522, 3834 and 3464. Closes 6858.
o Correctly return async bouncer deferred.

o Process unprocessed mail when MX starts (closes 2591).
o Log to syslog. Closes: 6307
o MX log and retry when delivery directories don't exist. Closes 6687.

o Bounce mails when there's a problematic situation for an email,
such as no public key. Fixes 4803.
o Properly log tracebacks for exceptions occuring in the mail
processing loop.
o Add errdecr key defaulting to each mail Soledad Document. Closes
6072.
o Any inconsistent user would make the mx stop decrypting mails for
all subsequent users.