[Mailman-Users] spam

alex wetmore alex at phred.org
Wed Oct 16 00:42:33 CEST 2002

On Tue, 15 Oct 2002, sean pambianco wrote:
> I'm using mailman 2.0.6.  My list is configured so that only members
> can post to the list and all posts must be approved by the
> administrator.  The other day an un-approved post was distributed to my
> list.  The post was not held for approval and I know it went out to the
> list because it showed up in the archives.
> Has anyone ever had an unauthorized post go out to a their list without
> administrative approval?  The email appeared to have come from the
> list-admin address.  Do later versions of mailman patch this?

It is very easy to forge the From:  line in email.  If a spammer
forges the From:  line to have a user which is on your list then it
will go through.  This isn't really a problem that Mailman itself can

I've also had a few examples of a member joining, sending spam, and
leaving the list very quickly.


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