From: Noel Jones (njonesmegan.vbhcs.org)
Date: Thu Jun 10 2010 - 10:53:34 CDT

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On 6/10/2010 10:20 AM, Chad Morland wrote:
> I am trying to setup a server that will be only used for mail forwarding
> and will not have any local mailboxes on it.
>
> I am trying to have virtual_alias_maps as the sole lookup and any other
> mail is rejected during the SMTP session after the RCPT TO command if
> the address is not found in virtual_alias_maps.
>
> I have the following in my configuration which works:
>
> smtpd_reject_unlisted_recipient = yes
> virtual_alias_maps =
> proxy:mysql:/etc/postfix/mysql_virtual_alias_maps.cf
> <http://mysql_virtual_alias_maps.cf>
> virtual_alias_domains =
> proxy:mysql:/etc/postfix/mysql_virtual_domains_maps.cf
> <http://mysql_virtual_domains_maps.cf>
>
> I'd like to do away with virtual_alias_domains but when I disable this I
> get "relay denied".
>
> Is there a way to configure postfix so that it is the final destination
> only for addresses defined in virtual_alias_maps and not the entire
> domain as implied by virtual_alias_domains?
>

You can use the "old" method of defining virtual_alias_domains
by defining them directly in virtual_alias_maps.
key value
example.com anything

If your domain list doesn't change often, just list the
domains in main.cf. If there are more than a handful of
domains, use a static hash: table.
http://www.postfix.org/postconf.5.html#virtual_alias_domains

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