pagure/doc/install_milter.rst

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Installing pagure's milter
==========================
A milter is a script that is ran by a Mail Transfer Agent (`MTA
<https://en.wikipedia.org/wiki/Message_transfer_agent>`_)
upon receiving an email via either a network or an unix socket.
If you want more information feel free to check out the corresponding page
on wikipedia: `https://en.wikipedia.org/wiki/Milter
<https://en.wikipedia.org/wiki/Milter>`_.
Configure your system
---------------------
* Install the required dependencies
::
python-pymilter
.. note:: We ship a systemd unit file for pagure_milter but we welcome patches
for scripts for other init systems.
.. note:: It also requires a MTA, we used postfix.
* Create an alias ``reply``
This can be done in ``/etc/aliases``, for example:
::
reply: /dev/null
* Activate the ability of your MTA, to split users based on the character ``+``.
This way all the emails sent to ``reply+...@example.com`` will be forwarded
to your alias for ``reply``.
In postfix this is done via:
::
recipient_delimiter = +
* Hook the milter in the MTA
In postfix this is done via:
::
non_smtpd_milters = unix:/var/run/pagure/paguresock
smtpd_milters = unix:/var/run/pagure/paguresock
* Install the files of the milter as follow:
+--------------------------------------+---------------------------------------------------+
| Source | Destination |
+======================================+===================================================+
| ``milters/comment_email_milter.py`` | ``/usr/share//pagure/comment_email_milter.py`` |
+--------------------------------------+---------------------------------------------------+
| ``milters/milter_tempfile.conf`` | ``/usr/lib/tmpfiles.d/pagure-milter.conf`` |
+--------------------------------------+---------------------------------------------------+
| ``milters/pagure_milter.service`` | ``/etc/systemd/system/pagure_milter.service`` |
+--------------------------------------+---------------------------------------------------+
The first file is the script of the milter itself.
The second file is a file specific for systemd and ensuring the temporary
folders needed by the milter are re-created if needed at each boot.
The third file is the systemd service file.
* Activate the service and ensure it's started upon boot:
::
systemctl enable pagure_milter
systemctl start pagure_milter