[Mailman-Users] Virtual domain support

[Geoff Shang]

Hi Mark,

re multiple installs,

On Mon, 5 Oct 2009, Mark Sapiro wrote:

> The post at
> <http://mail.python.org/pipermail/mailman-users/2004-June/037443.html>
> (linked from the FAQ at
> <http://wiki.list.org/pages/viewpage.action?pageId=4030604>) has good
> information. I don't thing there's anything better collected in one
> place.

I'm now working through this and have hit a bit of a problem.  The post in 
question reads as follows:

> Where thing may get more complicated is setting up your local MTA to
> support virtual hosts. For instance, aliases generated by the per-host
> copies of $per-host-prefix/bin/newlist will generate alias definitions
> that pipe to the correct per-host instance of the Mailman delivery
> agent script but getting your MTA to recognise the aliases belong to
> one host rather than another is not something I am familiar with.

This would appear to be the sticking point.  The aliases file doesn't 
generate fully-qualified Email addresses, only local parts.  How do I 
ensure that a message to announce at foo.com doesn't go to announce at bar.org? 
This must be doable, because if it's not, then this defeats the whole 
point of doing this in the first place.

Presumably I need to do this in postfix/main.cf somehow but I'm at a loss 
as to how to do this.

Geoff.