[Mailman-Developers] Allowing post just if a header is present

[Paulo Eduardo Neves]

I've tried to have a list open, manually approving the messages of 
non-subscribers, but due to the amount of spam and virus, I can't handle the 
workload any more. 

I want to allow posting of non-subscribers just if they use a form in my 
webpage (no direct emailing to the list address). It looks like that it isn't 
possible to automatically approve a message just if a header is present. Any 
tips on how to implement it?

regards,
-- 
Paulo Eduardo Neves
Agenda do Samba & Choro, o boteco virtual do samba e choro
http://www.samba-choro.com.br