For those who like to provide gentle reminders regarding mailing list etiquette to subscribers whose auto-responders reply to mail sent to lists (rather than only replying when the recipient is specifically named), there is now a standards-track RFC that you can reference to reinforce that such responses SHOULD NOT be issued:
RFC 3834 Recommendations for Automatic Responses to Electronic Mail Get it from your favorite RFC repository, such as: ftp://ftp.rfc-editor.org/in-notes/rfc3834.txt Stephen