[ Okay, first version get held for moderation by Mailman, with a
'Message has a suspicious header' warning - I'll try adding a Message-ID ]
For what it's worth, mailman is indeed set up to hold anything for moderation if it doesn't have a valid Message-ID header.
Even though every RFC I've read says the Message-ID is only recommended, there's only a very small number of real MUAs that don't set their own. In the two years or so since I added that rule, there's only been one false positive that I recall. At the time, however, it cut through something like half of the spam that was reaching the list. (Can you tell it's my favourite piece of filtering ever? ;-)
-- Pete -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
