Damian Johnson:
Hi nusenu. David is listed as the maintainer of bad-relays@ [1] so this is a question for him.
I did not send it to him only because I assumed that there are some improvement options that do not rely on the moderator only (mailserver).
Generally speaking the choice is simply: should all new senders go to a moderation queue or not.
I believe there are more options than that.
https://www.reading.ac.uk/internal/its/help/its-help-email/mailmanspam.aspx https://wiki.list.org/DOC/Mailman%202.1%20List%20Administrators%20Manual#Sen...
You could * whitelist all email addresses that are subscribed to any lists.tpo list * tell mailman about spam headers (if you have any) * moderate the rest that never send a valid email to the list
From looking at the past emails I expect that the average moderated/delayed valid email will be <=1 per month while ~15 spam emails per month would not reach the list.