In message <Pine.LNX.3.96.990423042812.27645Jemail@example.com>,
"Jenni \"Benji\" Baier" <firstname.lastname@example.org> wrote:
>The other other list admins and I (as well as the network admins for the
>network that hosts the box that the list server runs on) have discussed
>banning known anonymous mail relays and other problem sites from
>subscribing to the list, for this and other reasons. I'm already the
>admin for other lists that have had a more restrictive subscription policy
>for a long time... often they require a questionnaire be completed before
>they can subscribe. It may be inconvenient, but it seems to help. Anyone
>have any thoughts about this?
What you are really talking about is forwarding services.
Note that essentially any UNIX-based MTAs has the capability of doing mail
forwarding (but you probably don't want to block mail from all UNIX systems).
The problem isn't all forwarding services, but just the ``free'' forwarding
services, including (but not limited to):
There are several others.
It seems that it is only the free forwarding services that net-miscreants
are inclined to use to cause grief for others.
An account on any one of these can be (and on occasion have been) setup,
subscribed to a couple of bazillion mailing lists, and then, once the
fire hose is up to full speed, it can be redirected at someone else's
account... presumably someone whom the account creator does not like.
This exact thing already happend to one account here via a free usa.net
If I were a list admin, I would refuse subscriptions for any address in
any one of these domains, but that's just my opinion.
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