Managing Linux® Systems with Webmin™ System Administration and Module Development

38.6. Managing Virtual Mappings

Qmail can be configured to treat email to the same mailbox at different domains differently, so that [e-mail] and [e-mail] are not delivered to the same user or alias. This is vital if you are hosting multiple mail domains, as there are certain to be clashing mailbox names (like sales or webmaster) in several of them. Creating an alias that only applies to a certain domain, rather than to all domains, accomplishes this because the aliases created by following the instructions in Section 38.4 “Managing Email Aliases” do.

Before you can add domain-specific aliases, Qmail must first be configured to treat the domain specially. It adds a suffix like example- or foo-internally to the To: address of any ...