What mailman version is this?
I tried the exact regexp "^(?<!listname@konijn\.)somesite.be$" without the quotes in accept_these_nonmembers in Mailman 2.1.12, and it was accepted.
What mailman version is this?
I tried the exact regexp "^(?<!listname@ konijn\ .)somesite. be$" without the quotes in accept_ these_nonmember s in Mailman 2.1.12, and it was accepted.