[Mailman-Users] Suppress moderation message in mailman 2.1 ?

[John Levine]

In article <851008d1-e6dd-bafe-9e85-e1ebaf1b81a9 at msapiro.net> you write:
>So my first question is how/why are the posts being held?

Because the people posting from usenet aren't list subscribers. They
read the messages on usenet.

>> When mailman mdoerates the message, it sends the usual moderation
>> message to the usenet poster, which many posters find confusing.
>
>This should not happen. The code that sends the user notice of a held
>post specifically exempts posts from usenet.

Clearly it is expecting something that my gateway isn't including.
How does it try to guess that a message came from a usenet gateway?

R's,
John