Postfix, cyrus, mailman and virtual domain

To any attentive postfix gurus...

I have had a mail server running for several years. It has used
Sendmail as a transport. It also hosted several mailing lists, which
were simply implemented using sendmail's alias file and it's piping
capability. I also used dnews news server (and dposter) to archive
mailing lists posts.

Well, the world has changed much since I setup this machine and now we
have SPAM and viruses and other malicious activity to guard ourselves
from. List usage must now be restricted to members.

I am now setting up a new server employing Postfix instead of sendmail,
Cyrus Imap (for mail users) and Mailman (for list users).

This mail server has a local domain I'll call domainA.com. The bulk of
the mailing lists use another domain I'll call domainB.com.

I want any mail going to list1.domainB.com to actually get sent to
mailman, who will then send it out to list members (after checking to be
sure sender is also a member).

a) The members of these mailing lists are not local Unix users.
b) Most lists are in domainB--the non-local domain.
c) There are a handful of lists.
d) Currently, association members can maintain their member profile on
the association website and simply check off the lists to which they
wish to subscribe. Behind the scenes, they are added to or removed from
these lists. I want to continue doing this.

Postfix is working and Cyrus is working. Mailman is installed, but not
setup.

My confusion is in the integration of Mailman and Postfix. I'm not sure
which route to take and not too sure how to configure either one.

I read about Virtual Alias Domains in the mailman Installation manual,
but I don't understand how to set them up. I have read the virtual(5)
and virtual(8) man pages for Postfix and still don't get it. None of
the docs I've read give actual examples. Instead, they talk in this
"mail.dom1.ain" type jargon.

Really, I think if I could just look at some example Postfix
configuration files from anyone who has this scenario up and running,
I'm sure I could figure it out.

Can anyone help?

TIA,
Dan

Dan Sadaka wrote:


> I want any mail going to list1.domainB.com to actually get sent to
> mailman, who will then send it out to list members (after checking to be
> sure sender is also a member).

OOPS! This should read list1@domainB.com not list1.domainB.com.

Thanks again,
Dan