Do not send notifications to registrants (and never if the pillar does not use bugs)

After reviewing several emails I can see most, may all, the emails for because of other-distributions. ~registry is the owner of all distros except for 3, but unknowledgable user target bugs to tis distros. They do not use launchpad, and not that users cannot register them. Admins register them then either give them to a user (who can choose to enable bugs) or gives them to ~regisrty, (it will never use bugs).

The best fix for this issue is to honour official_malone in the case of distros. reject the owner recipent if the disrto does not use Launchpad bugs.

Hi graham,

Looking in a stale version of canonical/launchpad/mailnotifications.py, this is the code that I believe is wrong:

    # If the target's bug supervisor isn't set,
    # we add the owner as a subscriber.
    pillar = bugtask.pillar
    if pillar.bug_supervisor is None:
        also_notified_subscribers.add(pillar.owner)
        if recipients is not None:
            recipients.addRegistrant(pillar.owner, pillar)

^ Launchpad should check that pillar.official_malone before adding owner or bug_supervisor. The first because the user is probably the registrant, the second because the supervisor is the upstream bug contact for many mirrored projects. Now we may think that he second point is wrong...we do want to send the upstream bug contact an email. I think in general, a project must use lp to track bugs for lp to consider forcing users into subscriber lists.

In the previous comments about this bug it was limited to distributions. The fix should actually be applied for all pillars.

Fixed in stable r12145 <http://bazaar.launchpad.net/~launchpad-pqm/launchpad/stable/revision/12145>.