I've googled for this, and checked the man pages, but I don't see anything
that applies to this, though it's probably something straightforward that I
don't see.

I would like to have the "From" field in messages sent to my mailing list,
handled by ezmlm, replaced with the mailing list's address, and not the
actual sender, so replies get posted to the newgroup and not the original
sender.

I am using qmail version 1.02.22 and ezmlm version 0.53.2

Thank you for your time.