[all][infra][tact-sig] Mailman v3 migration for OpenStack mailing lists 2023-10-12

Jeremy Stanley fungi at yuggoth.org
Fri Sep 29 23:55:23 UTC 2023

On Thursday, October 12 at 15:30 UTC, the OpenDev Collaboratory
systems administrators will be migrating the lists.openstack.org
mailing list site from the aging Mailman 2.1.29 server to a newer
Mailman 3.3.8 deployment. This maintenance window is expected to
last approximately four hours. The key takeaways are as follows:

  * There will be an extended outage for the site while DNS is
    updated and configuration, subscriber lists and message archives
    are imported, but incoming messages should correctly queue at
    the sender's end and arrive at the conclusion of our work

  * Because this is on a new server, there are new IP addresses from
    which list mail will be originating: and

  * Moderation queues will not be copied to the new server, so
    moderators are encouraged to process any held messages prior to
    the migration time in order to avoid losing them

  * Anyone wishing to adjust their list subscriptions, or handle
    moderation or list configuration after the migration, needs to
    use the Sign Up button on the Web page to create a new account;
    it will be linked to your imported roles as soon as you confirm
    by following a URL from an E-mail message the server sends you,
    and is global for all sites on the server so you only need to do
    this once

  * The software providing Web front-ends for list management and
    archive browsing is entirely new in Mailman v3 and therefore has
    a much different appearance, though we've added appropriate
    redirects and frozen copies of old archives in order to
    accommodate existing hyperlinks

If you have any questions or concerns, feel free to follow up on the
service-discuss mailing list or find us in the #opendev channel on
the OFTC IRC network.
Jeremy Stanley
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