Due to a snafu in our antispam configuration, we unfortunately had our mail frontends reject all email for the mailinglist earlier this morning.
This is fixed now, and all lists work as normal again.
If you sent something and received a message that the list did not exist, you should probably send it again - but please check the list archives first to see if was actually delivered.
We apologize for the error, caused by a manual configuration mistake.
