I doubt that they are using BCC:.  If they are, then it is possible that
they are including your list as one of the recipients of BCC: and have NO
primary TO: field.

If you tell them NOT to do that, and they continue, I suggest

SET listname REVIEW FOR user@node

There is a list defintion keyword

* X-TAGS=

that might help/hurt your.

/Pete

At 01:52 02/27/1999 Saturday -0500, you wrote:
|Some People posting to the list I manage put their own, usually long,
|distribution lists into the Bcc: field. When these msgs are rebroadcast,
|their headers carry "Comment: to: ", followed by all the Bcc'd addresses. Is
|there any way that I can configure to eliminate these extra addresses?