The Postfix LDAP client requires an exact domain name match if you follow my instructions below. There is no subdomain logic.
Wietse Gomes, Rich: > I think the issue is that I am already doing lookups on the parent domain. > Is there a way to exclude specific subdomains? Wietse: > According to the ldap_table(5) manpage, you can specify a list of > domain names with the "domain" parameter, such that Postfix will > look up only email addresses with a domain that matches the list.