There's a new SOP that describes what we do to Bugzilla in Fedora:
https://fedoraproject.org/wiki/Infrastructure/SOP/Bugzilla
How to deal with the following occurrences is one of the things in it:
-------- Original Message --------
Subject: Errors while syncing bugzilla with the PackageDB
Date: Tue, 21 Oct 2008 20:12:26 +0000 (UTC)
From: accounts(a)fedoraproject.org
To: admin(a)fedoraproject.org
The following errors were encountered while updating bugzilla with
information
from the Package Database. Please have the problems taken care of:
({'product': u'Fedora', 'component': u'aircrack-ng',
'initialowner':
u'opensource(a)till.name', 'initialcclist':
[u'dah21(a)students.pti.edu',
u'opensource(a)till.name']}, 504, 'The name dah21(a)students.pti.edu is not
a valid username. \n Either you misspelled it, or the person has
not\n registered for a Red Hat Bugzilla account.')
-Toshio