[Koha-bugs] [Bug 34927] Adding DMARC compatibility to mailing lists

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=34927

--- Comment #4 from Thomas Dukleth <td-koha-bugs at agogme.com> ---
While there seems to be a consensus for adding DMARC support to all the mailing
lists, the development meetings request has been to contact people and see
whether someone with access was prepared to do the necessary work to alter the
configuration and may be trivial.  Explicit blessing for koha-devel and other
lists should wait upon the next development meeting where people can be
prepared to test the result.

We should probably wait until after the next meeting.  It may be better to try
first with a Biblibre hosted mailing list, such as koha-devel, if it is easier
to have attention to revert if a problem is identified and fewer people would
be affected adversely.


Mailman 2 Configuration.

When DMARC is activated we should set both of the following variables.

dmarc_is_list set to "Munge From".
dmarc_moderation_action set to "Munge From".

Preexisting or default values for other DMARC related variables should be fine.


Koha General Mailing List.

The only particular complaint about lack of DMARC support was for the general
Koha mailing list where someone has a work institution which has a strict DMARC
policy.

The Katipo Mailman 2.1.18 installation maybe somewhat older than the Biblibre
Mailman 2.1.26 installation and could use an upgrade but does not seem to have
a critical problem for Mailman 2 DMARC support.  We could find minor bug
1536816 for some messages in 2.1.18 which was fixed in 2.1.21rc1 is that
non-ASCII names pulled from the registered user list when absent in the
originating From header.  See https://bugs.launchpad.net/mailman/+bug/1536816 .

The DNS configuration for lists.katipo.co.nz needs the following line:

_dmarc.lists.katipo.co.nz. IN TXT "v=DMARC1; p=none"

... if using BIND as DNS server or the equivalent where the policy is "p=none"
matching the Biblibre DNS configuration and allows messages to the mailing list
from non-DMARC compliant systems.

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