Mailing list management is one of qmail's strengths. Notable features:

* qmail lets each user handle his own mailing lists. The delivery
instructions for user-whatever go into ~user/.qmail-whatever.

* qmail makes it really easy to set up mailing list owners. If the user
touches ~user/.qmail-whatever-owner, all bounces will come back to him.

* SPEED---qmail blasts through mailing lists an order of magnitude
faster than any other mailer. For example, one message was successfully
delivered to 100 hosts around the world in just 80 seconds, with qmail's
out-of-the-box configuration.

* qmail automatically prevents mailing list loops, even across hosts.

* qlist, included in the qmail package, deals with subscription requests
safely and automatically.

* qmail allows inconceivably gigantic mailing lists. No random limits.

* qmail handles aliasing and forwarding with the same simple mechanism.
For example, Postmaster -> ~alias/.qmailpostmaster. This means, for
example, that cross-host loop detection also applies to aliases.
