Why do I get messages about too many recipients?
"Too many recipients" refers to the number of recipients in the To: and CC: fields of the email, not to the number of subscribers to your mailing list. For example, sending email to firstname.lastname@example.org, and CCing (or TO) to 20 email addresses, would be sending to 21 recipients.
If Mailman sees the number of recipients exceeding it's threshold (10 by default) it will hold the message for your approval. To increase Mailman's threshold for this:
- Go to your list's list admin page
- Click on "Privacy Options..." and then "Recipient filters"
- Change the "Ceiling on acceptable number of recipients for a posting" value
- Click the "Submit Your Changes" button at the bottom of the page.