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