====== Mailman configuration notes ======

The mailing lists are now running with the standard Debian packaged version of Mailman.

The Mailman setup for Exim is in ''/etc/exim4/symbiosis.d/20-routes/11-mailman'' and ''/etc/exim4/symbiosis.d/30-transports/11-mailman''. It's standard Mailman/exim setup.

===== LongSig =====

There is one non-standard extension, the LongSig handler. I have copied the Python code for the LongSig handler into ''/usr/lib/mailman/Mailman/Handlers''.

LongSig is currently enabled only on ''accu-general''. The process is described in [[https://wiki.list.org/DOC/4.67%20How%20do%20I%20implement%20a%20custom%20handler%20in%20Mailman%2C%20e.g.%20to%20mung%20headers%20or%20filter%20posts%20based%20on%20regex%20searches%20of%20the|this Mailman FAQ item]]. The input filename for the modified ''accu-general'' pipeline is in ''/etc/mailman''.

===== Creating a new list =====

Given the appropriate Mailman login, you can create a new list from the web interface.

Unfortunately, it appears that while the list is created, some of the list files lack the correct permissions.

''# chown -R list:www-data /var/lib/mailman/archives/private/<list-name>*''

appears to be necessary.

===== Old/Disabled lists =====

There are lists which have been moribund for a while, and which we have disabled, to save the list admins from having to handle spam messages.

There is no official way in Mailman to disable a list. The closest you can get to is //emergency moderation//, which just makes all lists moderate every post.

So I've disabled the mailing lists by ''chmod 000 /var/lib/mailman/lists/<list>''. Also, I've modified the Exim Mailman router to check explicitly that the list file is accessible by group ''list'':

<code>
mailman_router:
 debug_print = "R: mailman_router for $local_part@$domain"
  driver = accept
  require_files = root,list:MM_HOME/lists/$local_part/config.pck
  local_part_suffix_optional
  local_part_suffix = -bounces : -bounces+* : \
                      -confirm+* : -join : -leave : \
                      -owner : -request : -admin
  transport = mailman_transport
</code>

This means that the list address is no longer routable, and the list no longer appears on the list of mailing lists. All list configuration and archives are preserved.