[Mailman-Users] Forged from headers and non existent lists

[Mark Sapiro]

stupidmail4me wrote:

>My site is getting a lot of spam sent to my lists.
>They are being sent from unknown people using forged
>from headers. Mailman then sends an email to these
>forged from headers telling them so and so list
>doesn't exist.


Actually, Mailman doesn't send this mail. The Mailman 'post' wrapper
which is invoked by your MTA writes an error message 'post script,
list not found: %(listname)s' to stderr and exits with status = 1.

Your MTA is then returning an undeliverable message to the sender.

But, as Hans points out in another reply, only mail to valid list
addresses should be delivered to any Mailman wrapper in the first
place.

-- 
Mark Sapiro <msapiro at value.net>       The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan