I suggest update transport documentation changing '*' to last lookup order.
Beacause users can to deduct erroneously that '*' is a wildcard, and
isn't. '*' is choosed caracter to represent a default
transport/nexthop,
'&' or '$' could have been choosed at development moment. Avoing users
try '*.example.com' or anything else.
...
.domain transport:nexthop
Deliver mail for any subdomain of domain through
transport to nexthop. This applies only when the
string transport_maps is not listed in the par-
ent_domain_matches_subdomains configuration set-
ting. Otherwise, a domain name matches itself and
its subdomains.
* transport:nexthop
The special caracter * represents a default transport. ('*' is not
evoluated as wildcard, it is a caracter choosed especifically)
Postfix do a last lookup for '*' in transport_maps.
Note 1: the null recipient address is looked up as
$empty_address_recipi...@$myhostname (default: mailer-dae-
m...@hostname).
Note 2: u...@domain or user+extens...@domain lookup is
available in Postfix 2.0 and later.
...
--
Reinaldo de Carvalho
http://korreio.sf.net (Now available in English)
http://python-cyrus.sf.net
