Public bug reported:
There is a report of this at https://mail.python.org/archives/list /firstname.lastname@example.org/message/CMQGFVJ26IPKJPFHMFIW36ZEB6QMETY7/
While it is unusual, and only occurs with a non-default setting, there should be no harm in truncating the name to < 255 characters.
** Affects: mailman Importance: Low Assignee: Mark Sapiro (msapiro) Status: Fix Committed
** Branch linked: lp:mailman/2.1
** Changed in: mailman Status: Fix Committed => Fix Released