The bug turns out not to be when there is a period in the address, but in the plain text name. The mail address in question is:
Mr. Bad <email address hidden>
I realized this when I saw people who had different text names from their e-mail addresses, as in:
Jr. Pickle <email address hidden>
This would show up as the mythical address "jr.pickle" in mailman, and things would b0rk.
The bug turns out not to be when there is a period in the
address, but in the plain text name. The mail address in
question is:
Mr. Bad <email address hidden>
I realized this when I saw people who had different text
names from their e-mail addresses, as in:
Jr. Pickle <email address hidden>
This would show up as the mythical address "jr.pickle" in
mailman, and things would b0rk.